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Among the possible environments that might hold fossils:

  • There are fewer fossils from land creatures than marine creatures.
  • There is no evidence of life living in lava or igneous rocks because we know for certain that a) Organisms cannot live in lava (plant matter burns, lack of oxygen deprives animals of life) b) fossil evidence is destroyed due to the melting and recrystallization of the lava.
  • Most fossils are found in rocks from marine environments. Famously, graptolites are best preserved in black shale.

You cannot say for certain that there were no land creatures, but because land fossils would be exposed to erosion and weathering. Most fossils are formed as a result of a tranquil marine environment allowing the dead organism to sink to the bottom of the water body, and are covered. In the absence of oxygen, the form is preserved and is fossilised.

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What part of an animal is most likely to form a fossil?

A2. The soft parts of an animal are least likely to survive, for these will be degraded by bacterial and insect action, if not by larger scavengers. If an animal dies on the land surface the chances of fossilization are minute.Good preservation of a fossil depends greatly on the environment in which the animal dies. If it is a very fine-grained silt, the probability of preservation is good, particularly of fine detail. The environment is likely to be anaerobic, and even the body's internal bacterial flora may be unable to survive in an anoxic environment.One of the remarkable preservations was the Archaeopteryx fossil, on which even the feather detail may be seen. Discovered quite soon after Darwin had launched his Origin of Species.Unusual preservation localities include swamps, and the remarkable La Brea tar pits. Another unusual fossil preserve is that of insects and spiders preserved in amber originally a gum exudate from trees.


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Related Questions

Which part of a dinosAur is least likely to be found as fossil?

Soft tissue such as muscles, organs, and skin are least likely to be found as fossils because they decay rapidly after death and are not easily preserved in the fossil record.


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What part of an animal is most likely to form a fossil?

A2. The soft parts of an animal are least likely to survive, for these will be degraded by bacterial and insect action, if not by larger scavengers. If an animal dies on the land surface the chances of fossilization are minute.Good preservation of a fossil depends greatly on the environment in which the animal dies. If it is a very fine-grained silt, the probability of preservation is good, particularly of fine detail. The environment is likely to be anaerobic, and even the body's internal bacterial flora may be unable to survive in an anoxic environment.One of the remarkable preservations was the Archaeopteryx fossil, on which even the feather detail may be seen. Discovered quite soon after Darwin had launched his Origin of Species.Unusual preservation localities include swamps, and the remarkable La Brea tar pits. Another unusual fossil preserve is that of insects and spiders preserved in amber originally a gum exudate from trees.


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Yes, because they usually rot away with the skin and other flesh and organ things.


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