62 thoughts on “Conditions for Fossil Formation

  1. Fossils can form anywhere, it’s the factors that determine whether or not an organism becomes a fossil. First, it’s how the organism died, if it died being hunted, it might be found in a different place and with it’s body parts scattered. Second it’s where it died, if it died in a sheltered place, there might be less of a chance for it to become fossilized, if it died in ice, it’s body might become fossilized with it.

  2. I claim that fossils can form in the ground or in mountains. usually when a organism becomes a fossil is when they die and there bones sit there for a long time. My evidence is this is what I know about fossils.

  3. Fossil’s can be formed almost anywhere, any organism can become a fossil if it goes through the following. The organism will probably have to be stuck in certain saps which will end up covering the body and preserving the body, freezing also works whether in a solid block or just freezing to death as long as the body is mostly incontact, partially well, and completely engulfed within.
    Most plants tend to freeze in place or scientist might put them in glass to observe, animals tend to be fossilized due to sap or be stuck in rock and are most likely to be many years old, some even spanning back to 200 B.C.

  4. I claim that fossils can form in many places. It depends on the environment, but they are made in any area where they are protected from the elements. I think that this would mean they are formed underground, where it is harder to reach them. Fossils do not form in igneous and metamorphic rock due to the fact that those types of rock are made in very hot environments. Sediment could accumulate over them and then they would be preserved, and become a fossil, in that way, so it is more likely fro them to be made in sedimentary rock.

    • While my first post was not incorrect, it was incomprehensive. A fossil is formed in more areas than just sedimentary rock. They are formed in areas with little water and low oxygen levels. These areas include fine mud and other sediments. Fossils can form basically anywhere these criteria are met. If an area is dry, with high oxygen levels, it will likely not contain fossils. Also, not all organisms will fossilize easily. An animal with a soft body, such as a worm, will not fossilize as easily as, say, a turtle. When these fossils are formed it is extremely rare. I know about this due to the multiple demonstrations in class, and the use of the stream table. These helped my understanding of fossilization increase significantly.

  5. What I think is that any organism can become a fossil. If an organism dies it would decompose or be covered in layers of rock and dirt preserving the bones. Thats how we have discovered dinosaurs because we have discovered remains of these creatures and plants underground from millions of years ago.

    • I claim that organisms can only fossilize in certain climates. My evidence is that in order for a dead organism to fossilize it needs to be in an area were there is a lack of oxygen, such as under water or underground, or at the bottom of the ocean covered in sediment. If there was any dead organism on land it would have a much harder time fossilizing because of being exposed to so much oxygen, except if the body is affected by weathering and is covered in sediments then it could become a fossil.

  6. I claim that fossils form in wet areas with high pressure. My evidence is that if area is wet then organisms do not rot. If an organism rots then it cannot be a fossil. Also, an immense amount of pressure must be applied to allow the bones to solidify into a rock like form. A few factors that affect dead organisms in their process of fossilization are the pressure and moisture level of the area they are in.

    • I claim that fossils form best in areas with very little oxygen. My evidence is that if there is little or no oxygen then the organism cannot decompose. Also, many fossilized animals are found in areas with little oxygen. There are a few factors that can affect whether or not an organism fossilizes. One is if the organism gets eaten before it can fossilize. Another is where it dies. If it dies in place with more oxygen it is less likely to fossilize. Finally, if it has a skeleton it is more likely to fossilize than invertebrates.

  7. Fossils can form all over the place. It just depends on how the plant or animal die. Like if the plant or animal die and it was preserved in ice it could over time be turned into a fossil. But if it were to be on the top of the ground being eaten by thing it may have a less chance of becoming a fossil.

    • I claim that fossils tend to form in areas that have less or no air. It just depends on how the plant or animal die. Like in my first post I said “if the plant or animal die and it was preserved in ice it could over time be turned into a fossil” that’s not true in that case that is more mummification. But I was correct when I said “if it were to be on the top of the ground being eaten by things it may have a less chance of becoming a fossil”.what a thing needs to become a fossil is for the animal to be put in a place where the is no or less to no air, no or little to no water and be surrounded by earth for ten thousand years

  8. I claim fossils can form anywhere under the right circumstances say an animal dies in a swamp then a landslide happens the sediment will cover the decomposing animal and it will eventually turn in a fossil but some of the factors that affect this might be climate how warm or cold the organism is when it dies.,location of death like lets say the ocean the organism would be swept away before it could become a fossil.

    • I claim that fossils are formed by dying in something like say mud or tar my evidence is if an organism dies in mud or sediment oxygen will reach the animal slower so it is preserved longer.but certain factors affect fossilization like weather it died without anything protecting it from the elements.Also water is better at preserving fossils than land because if the water is still enough sediment that floats down the river will cover the organism.

  9. I think that fossils can only form in places the organism died at that are suitable for the organism to fossilize. A animal or plant can be frozen in ice when they died, the ice can preserve its body for a very long time and it can be fossilized in ice, or a bug can die and sap from maybe a tree covers its body it can be fossilized in sap. thats all I really know about fossils right now.

    • I claim that fossils can only form in a place with certain condition like sap, that do not allow it to decompose. Either a plant or an animal can be fossilized in a material. A place with small amount of oxygen will slow the decomposition, so it can become a fossil. It will take a very long time to fossilize, and also the chances of an organism becoming fossilized is extremely low. There can be unknown species that did not fossilize, and never will be found.

  10. There are many places where fossils can form. A couple of them are like in the mud but most fossils are formed underground. Fossils are formed by say like if an animal die it might get buried over the years and then over time all the dirt would eventually mud and dirt packed around it then it would just sit there.So thats how fossils are formed.

  11. I claim that fossils can form anywhere and organism can turn into a fossil when the organism dies, when the fossil is left the dirt or mud around it may cover up the fossil. The fossil can take in some of the mineral from the earth and become part of a rock.

    • I claim that fossils can form in fine mud or places like near water that have no oxygen. My evidence is that in order for the fossil to fossilize they form near water where there is mud. If the fossil is exposed water or air it can decomposed and it will not become a fossil.

  12. I claim that a fossil can form anywhere when the organism died and the bones are there for a long time and the dirt preserves the body. Fossils that are found in the ground are covered by dirt and rock for a long time. My evidence is what i know about fossils.

    • I claim that fossils can form where there is moisture. For a something to fossilize it needs someplace where there is moisture and very little oxygen, if there is oxygen then it can’t be fossilize. Where there is very little oxygen is underground, underwater, or in a ocean with sediment. A fish that died in a river will fossilize better than a fish in the ocean, because in the river the fish can be carried to a different part of the river that can be buried, but if the fish died in the ocean it would have a harder time to be fossilized because it won’t be able to move anywhere to get buried and the oxygen will have the fish decompose faster than the one in river or another animal will eat it. It depends on where the organism dies and if it has the right conditions.

  13. I think that fossils are made when an animal, plant, person, (or anything else that is carbon based) is quickly buried before it has time to start to decay, otherwise, there wouldn’t be anything left to be fossilized. As lays is in the ground, it slowly absorbs the minerals from the earth around it. Over the course of about 15-20 years, the object will have absorbed enough of the earth’s minerals that it took the place of the rock and became a hard fossil. One way we can prove that it only takes about 15-20 years is that was found somewhere in Yorkshire. Also, a boot was found with a fully fossilized human leg still in it.
    you can read about it here.

  14. I claimed that Fossils are mostly everywhere, so the orgisam can be huge or small, since fossils are found underground.They have been in the ground for millions years ago, or they might of been destroyed or they might of been found. Fossils are the animals or creatures from the past that died or gotten killed by something that might of killed it. Then soil has to cover it up for a long, long time and turns the bones into rock.

    • I claimed that fossils are found at fields, some died near the ocean or in the Ocean. Fossils are found underground since the dirt or mud covers up the bones of the animal’s. Sometimes when you find a fossil, it might just be their body or head. In the past, the animals that died left some trace of them in the dirt or rocks, such as their tooth or claw. I think fossils are hard to find, since they might be deep underground or they might be at ground level under a building, mountain, or forest. How the animals form into a fossil is that they die or get killed by another animal or the weather. Something may have happened to them when they were laying on the ground. An animal could have ate the plant or animal as well. Their body will decompose and leave their bones in the mud or dirt. The mud or dirt will be covering it and it’ll be in the ground for years until someone finds the fossil that had been underground for years.

  15. I believe that fossils are under ground because of an organism that died, their body gets eaten by other things in the ground and then the fossils or bones sit there until they are found by others. But fossils can form almost anywhere the fossils can even fossilize with the body if the person or creature is frozen for a really long time.

    • Fossils can fossilize anywhere, but it’s kind of rare to have bones fossilize under water. The water they died has oxygen to float up on the surface, but after they die they just go down on the muddy part of the pond/sea/ocean. So due waiting until the water moves to have the sediments go over them, other fish or some other animal will eat the flesh or skin off possibly. Fossils can go under anything as long as it is buried somewhat, but it will always need to have some kind moisture to fossilize.

  16. I claim that a fossil can be formed in wet areas that have mud or water nearby. Some of the factors could be that if part of the bones of the animals broke so it wouldn’t turn out right, if it’s dry land it won’t fossilize, and if they got destroyed by natural disasters.

    • I claim a fossil can be formed near a body of water and buried under mud. If its too exposed to air or too much water it could decompose and not become a fossil. Animals and plants need to be in certain conditions to fossilize and if they are not they won’t fossilize.

  17. I claim that fossils can form almost anywhere in the ground if they have the all necessities to become a fossil. They would need to be buried deep down with a type of sand or dirt with a little bit of water and would have to be in said place for a very long time to become a fossil.

    • I claim that Fossils can be found mostly by rivers or streams. My evidence is that I used two models and read from the classroom books. Fossils on land are very uncommon and take a lot to become fossilize. Firstly they need to be living in a area that has deposition or the fossil will not be preserved. Secondly its needs to be buried before decaying (if its a soft body animal it will be harder to keep from decaying) and needs to buried with the least amount of oxygen possible or it will not fossilize as well or not at all. and lastly time, fossils need hundreds,thousands, even millions of years to become a fossils. Sea creatures can become fossils too by dying before decomposure and not being eaten by its upper food pyramid species and sink to the bottom to be buried with sediment though it isn’t easy just like the land fossils. The whole process is almost as similar as land fossilization.

  18. I think that fossils can be found anywhere, at any size, and that it depends on the conditions the organism was in at the time of fossilization. This conditions include where and how.Where being weather, time,and place. How being the way the organism died and the condition its body was in at the time, like what diseases did it have, any abnormal behavior, etc.

    • I think that fossils can be found anywhere, but it is very rare for certain types of fossils to form in every place. For example, a fish is more likely to fossilize when it is in a river rather than an ocean. This is because a river could lift the fish into the bank of the river, or it could move the fish to a different part of the river, and the fish could get buried. With the ocean, the fish wouldn’t really be able to move any where, and an animal or another fish might eat it. The fish in the ocean might decompose faster due to the oxygen in the water as well. So fossils forming only depends on what place they are forming in, some places don’t have proper conditions, so it is very rare for a fossil to form.

  19. I claim that fossils can form just about anywhere as long as the organism is buried there with enough time to decay. The evidence I have is as long as the organism is in the ground for a really long time it can fossilize. Some factors that affect how the fossil can be temperature and the amount of pressure. Depending on the temperature the organism won’t rot and there has to be a lot of pressure for the organism to fossilize. The organism also has to be deep in the ground so it is not affected by weathering.

    • I claim that fossils can form in area where there is moisture. For example a place where fossils could form is at the bottom of a river. The factors that affect whether an organism can fossilize is there has to be a moist area and there has to be an area with little to no oxygen. The organism also has to fossilize in an environment with no erosion. The evidence I have to support my claim is that the moisture in the environment creates mud and the mud can press and compact over the organism and fossilize. The oxygen in the air decomposes the organism too quickly and it cannot be preserved and fossilize. The organism has to be in a environment with no erosion because erosion will cause the organism to not be preserved. There has to be strict conditions in order for an organism to fossilize.

  20. I remember talking about fossils in seventh grade, but I don’t remember it well enough to repeat it back at you. But from what I remember, if a creature dies in a swamp, then the mud outlines its bones and then it hardens. After erosion pushes it into the earth, we are left with fossils.

    • Although my first post wasn’t completely wrong, when an animal or organism begins to decompose in fine mud. When a body is buried in sediment with little oxygen, it decomposes less fast. Hard shelled, or animals with bones, are easier to fossilize. The body must be buried while dead, or buried alive. Soft skinned creatures were less likely to fossilize considering how there bodies could be eaten, forcing a bias against soft skinned creatures. Another thing I didn’t mention in my prepossessing post was how long it takes, witch in this case, quite a while. Being thousands of years.

  21. I claim that fossils can form just about anywhere. I think they are most likely to be found in watery environments because most fossils are formed after they die, and their bodies are covered with mud and silt. I don’t think fossils would typically be found in dry environments because then, sand or rocks would just blow right over and not become cemented together. My evidence is composed of many different pieces of background knowledge. For an organism to become a fossil itself, it has to turn to stone. To turn to stone, it has to be dead, and get covered with sediment. The process is interrupted when, say, heavy rains or floods wash the sediment away.

    • I claim that fossilization is very rare, and the conditions for fossilization have to be perfect or else it will not occur. I still believe that fossils are most likely to be found in moist, damp environments because most fossils are formed by being buried by muddy sediment. You probably wouldn’t find fossils in the desert because wind erosion would keep the animals from being buried before they decomposed. Animals need to be in the perfect environment for fossilization, which includes: mud, the perfect amount of water, and little to no oxygen. An animal’s remains obviously won’t fossilize (in the same area) if they are eaten by another animal. My evidence is the collection of laws for fossilization.

  22. I claim the you can find fossils close to the earth’s surface and deeper within the earth. I also claim that the fossil’s size can be determined by what kind of animal it was for example an elephants fossils would be much bigger than a snake or a rats.

    • i claim that it must be in a moist and low oxygen environment in order to fossilize it also depends on what type of animal it is soft or hard bodied. soft bodies animals have a rare chance at fossilizing because there body would decompose before reaching the bottom of the lake or ocean. hard bodied animals such as a freshwater fish have a good chance at fossilizing because the lake isn’t as deep so it would make it to the bottom before being eaten or dissolved. it also depends on if its and ocean or a lake because oceans are bigger than lakes which makes it harder for animals to fossilize in the ocean water. it also depends on if the lake or ocean is muddy or not.

  23. I claim that fossils can form anywhere but they have to be preserved in some type of way. Scientists have found many different prehistoric bugs trapped in sap and prehistoric animals trapped in ice. The main thing about fossilization is that the bones are trapped in the ground which doesn’t let the bones decay or rot.
    Depending how it died too is an important factor because sometimes the bones will be scattered, that’s why some of our dinosaurs that scientists find are not completely constructed yet.

    • I claim that fossils can form just about anywhere it just depends on if they have a hard shell and skeleton or soft tissue and where they fossilize. Organisms with soft tissue such as jelly fish or bacteria are very rare to find a fossil of because unless they are almost immediately in fine mud and there is little oxygen they will start decomposing. Organisms with a hard skeleton or hardshell are more common, animals with a hard skeleton unless protected or shaded their bones will be scattered. Fish that live in the surface water because theres more oxygen die and their skeleton then sinks to the bottom where there is less water currents and oxygen allowing them to fossilize easier.

  24. I claim that fossils can form anywhere, Underwater animal they dry up since they aren’t in the water for a long time the sun drys them up which turns them into fossils it’s like a grape how when they get dry they turn into raisins. Land animals turn to fossils when they die there body goes into the ground and the skin dries up and it’s just the bones that are left.

    • I claim that fossils form where theres mud to bury them. Animals the don’t have bones they just decompose, if they have shells they turn to fossil. Bones and shells turn to fossils by getting buried in mud and the mud drys up and they turn to fossils. The ones that are in water when they die their bodies sinks down to the bottom and gets buried by sediments. If a animal dies in the dessert or a dry place it will likely take a long time to turn to a fossil since there isn’t mud and water to bury them.

  25. I claim that fossils can form anytime and really anywhere the only reason I believe this is because what factors it depends on the type of rock and soil that is provided and an animal most likely has to live there to be fossilized. When an animal or any living organism dies it decomposes and it can turn into a fossil when rock and soil sweep over it. My evidence is the studies of fossils and when we discovered insects and other organisms found in amber, and when we discovered dinosaurs they were fossilized, and perhaps when we discovered extinct creatures found in ice, or maybe just some of their body parts were just preserved.A very cool and interesting fact is that an animal’s footprint can be fossilized! Isn’t that amazing! Its fascinating really.

    • I have learned a lot since the last post, not many plants and animals are lucky enough be turned into fossils. When an animal or plant dies its remains usually decompose and rot. But, when the conditions are just right and the carcass can be buried quickly, it may be fossilized. But, there are some requirements that need to be met first. First of all the animal has to live in the place where it has died and the conditions of the place may affect whether the organism may fossilize. The organism most likely has to be buried in rich soil or fine mud. Fossils are formed in different ways, but most are formed when a plant or animal dies in a watery environment and is buried in mud and silt. Soft tissues decompose faster if the soft bodied organism is exposed to air and it is rare for a soft bodied organisms fossilized when it is, it’s fascinating and exciting! When a soft bodied animal/organism dies it has to be buried quickly or it won’t fossilize. Over time the fossil will be buried in sediment and it hardens into rock. Shells and plants can also be fossilized! And in the last post I said that footprints can also be fossilized it’s such a cool fact!

  26. I claim that fossils can form anywhere, underwater animal they dry up since they aren’t in the water for a long time the sun dries them up which turns them into fossils it’s like a grape how when they get dry they turn into raisins. Land animals turn to fossils when they die their body goes into the ground and the skin dries up and it’s just the bones that are left.

  27. I think how fossils form is if they decompose into the Earth but if their decomposing process had been interrupted like if it had been eaten by a predator. It also takes a long time to fossilize which could lead to something happening to it along the way.

    • I claim that how fossils are formed is if an animal dies their bodies are most likely to decompose but very few fossilize it also takes a long time to turn into a fossil but if water can speed up that process but it isn’t a positive thing if that happens that means it will decompose after a while instead of fossilization. The most common organism to fossilize is usually hard shell organisms. The only way soft-bodied animals can fossilize is if they are buried very quickly because they decompose faster than animals with shells.

  28. I claim that fossils can be found anywhere from mountains to oceans they can also be found in sand dunes. but it depends on what climate they die in like if they die in a cold one the fossils are going to be frozen. if they are found in sand dunes they will just be covered in the sand.

    • I claim that fossil can be formed in freshwater rivers and anywhere that is good enough for them . I think that fossils can be formed in rivers because it can get stuck under the mud to be a fossil. Soft body organisms are hard to get fossilized because they have to get buried fast. Factors for the organism to be fossilized are being buried in sediment and leave a imprint before they decompose.

  29. A fossil can form in sedimentary rock and that can be found at the surface of the earth. But how fossil forms at all will be explained and so I claim that fossils form when an animal dies after the animal dies the extra stuff rots away leaving just the skeleton and then that skeleton begins to be covered in sediment which at the time is like a mud like substance then the sediment begins to harden incasing the bone then over time a shell will start to form around the bone which is what really preserve the bone as then the ground above the fossil wither away or just be dug up.

    “How Do Fossils Form?” The Learning Zone: What Is a Fossil?, http://www.oum.ox.ac.uk/thezone/fossils/intro/form.htm.

    • A fossil can be created almost any where as long as theres water and soft enough ground to sink into but there are clearly places fossils cannot form like a dry dessert where there is no soft ground or water but this can happen a forest that does not get that much rain it can also depend on what type of animal it is as an example a crab probably has a better chance of fossilizing than a dog.
      And even if the fossil does form it can wither away over time due to a strong current.

  30. I claim that fossils can be found anywhere. My evidence is that depending on how they die, fossils could be in the same area or scattered all over. Maybe one animal can be born in one state or the same animal can be born in a different state.

  31. I claim that fossils can be found just about anywhere on land or by water. Animals that have bones fossilize when they are exposed to moist areas, sediment, mud and oxygen. Animals that have no bones fossilize a little differently. They have to be exposed to not much water or oxygen because they decompose faster then animals with bones. Also to fossilize with animals that don’t have bones they would have to be buried almost right after they die, or buried alive.

  32. I claim that there are many factors and conditions that go into the fossilization process. First you have to have an organism die but it can’t just be anywhere. The reason there aren’t a lot of fossils of specific species may be because their habitat or where they died happens to not be in a very good place for fossilization. One condition for fossilization is there has to be low levels of oxygen. A good place for that would be in water due to the lack of oxygen. However, when an organism is going through the fossilization process the remains must be still or close to that. So a river with a fast current probably isn’t going to be the best place for fossilization. Mud or rich soil is another good place for remains to start fossilization since it’s moist. Just because an organisms remains happen to be in a river, rich soil, or mud, it doesn’t always mean it’s going to fossilize especially if it has soft tissue. Organisms with soft tissue tend to rot and decompose easier than one with a hard shell. My evidence is all of the fossils we have found to this day, where we find them, and the quality of them when they are found.

  33. I claim fossils can come from just about anywhere in the world (that has moisture). An object can not fossilized unless there is moisture and if there is on or very little oxygen.(oxygen is not a fossil’s best friend).

  34. I think still that fossils are made when an animal, plant, person, (or anything else that is carbon based) is quickly buried before it has time to start to decay, but I now also think that an organism is easier fossilized in muddy limestone. As the organism lays is in the ground, it absorbs the minerals from the earth around it. After about 15-20 years, the object will have absorbed enough of the earth’s minerals that it took the place of the rock and became a hard fossil, but is still not considered a fossil by definition, until it is over 10,000 years.

  35. I claim that there is two kinds of fossils a mold fossil which is an imprint from when the shell/bone dissolves. The cast fossil: when area where the shell/bone was filled with minerals. Also there is two types of fossils body fossils and trace fossils. Body fossils are an imprint of an animal or from an animal Ex.bones. Trace fossils are evidence from an animal Ex.tracks, trails, feeding/resting marks. My evidence is I saw What these fossils looked like and a geology collage student came in (Jennifers daughter).

  36. I claim that fossils need to be covered in sediment and mud same thing for soft-body and hard body animals. It’s a rare chance for a soft-body animals to become a fossil because they don’t have bones. It’s a uncommon chance for a hard-body animals to become a fossil because bone’s can decompose before fossilisation. same thing for the soft body animals but it’s a little different sense it’s less likely to leave a print.

    My evidence is a. Fossil rock kind of look like a mold or cast and bone and shells are more likely to become fossils and limestone and shale are other things you can find fossil in.

  37. I claim that there has to be just a little bit of moisture for a fossil to form. In a dessert a fossil can form, but it would be rare to form because there is very little water. Whereas in a swamp area there could be fossils because there is a lot of mud and clay. The clay and mud keep the organism together. It also depends on how much oxygen it has like fi you have a rat and you wanted it to turn into a fossil it would have to have as little oxygen as possible in order to turn into a fossil.

  38. I claim that fossils can form in oceans when organisms die. My evidence is rains makes mud and the mud covers the dead animal’s bones and/or shell and it is uncommon for soft bodied animals and it is less common to have hard body animals to fossilize because their bones can decompose before fossilization and most common in limestone.

  39. I claim that fossils can form anywhere. It depends on where the animal is located, and if it is soft bodied, has a shell, or is a land animal. The only way soft bodied animals could form was if they were buried alive, or buried soon after death. Animals with shells don’t really become fossils because they are in places (like the ocean), that have very strong currents and waves. It causes the animal to break down faster and when it fossilizes, it looks more like sand or gravel, therefore we wouldn’t be able to tell that it was a fossil.

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