- FOSSILS
- Caused by gradual replacement by minerals, this is basically teeth and stuff being replaced by minerals and becoming rock like substances.
- Impressions left by the body in rocks such as clay.
- Preservation in extreme environments were enzymes can't work to decay them.
- Fossil record is created by all the physical characteristics left behind in fossils to create a sort of timeline of the different fossils.
- There are big gaps in the fossil record due to very few plants and animals actually becoming fossils, and soft tissue does not turn into fossils. Unhelpful if you ask me. And some fossils have not been found yet.
THE PENTADACTYL LIMB
A pentadactyl limbs is a limb with 5 digits. Does your hand have five digits? If only there was a theory of evolution that explained that...
Obviously it was dead when this was taken... |
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