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. Polystrate fossils-
- fossils that extend through multiple layers of strata.
what are the specific conditions a fossil form
when an organism is rapidly buried in sediment soon after death which helps preserve it before decomposition or scavenging occurs
whats the site where numerous fossils are found together, often with bones from different organisms jumbled together
graveyards
unconformity
when continuous strata are missing one or more layers as required by the geologic column a gap
living fossils
are animals or plants that disappeared abruptly from the fossil record, yet are still alive today
coelacanth
a lobbed-finned fish found in Devonian rock layers. in 1938, alive Coelacanth was caught and found to match the fossil version in every detail thought to be the ancestor of the first amphibians
wollemi pines
supposedly extinct, later discovered in a remote canyon
stasis
organisms show no change between it appearance in the fossil record and the present day
examples of stasis
tuataras, coelacanths and cockroaches
