The abrupt appearance of trilobites in Cambrian strata and their absence in Precambrian sediments is a real feature of the rock record and not due to failure of preservation in Precambrian rocks.
How Long do Fossils Take to Form?
The study of fossils and the associated rocks in which they are preserved gives us information about ancient conditions in which organisms lived, called paleoenvironments, and the pathways leading to their fossilization.
Patterns in the Fossil Record, Part 2
A general note of caution is necessary in the discussion of patterns in the fossil record. As with many other aspects of the natural world, the complexity that we find in this field of study tends to transcend our idealized categorizations.
Patterns in the Fossil Record, Part 1
Fossils are remains of organisms or traces of their activity preserved in the rock record. The scientific significance of fossils is truly remarkable, because they represent the only available archive of past forms of life. Through fossils, not only can we reconstruct the morphology of extinct creatures but also infer aspects of their ecology and environment. Fossils are also very relevant in discussions…
The Cambrian Explosion
Texbooks describe the fossil record as the ‘best evidence’ for evolution. They claim that the fossil record proves evolution because there seems to be a succession from simpler to more complex life forms, and a succession from marine to terrestrial forms. Charles Darwin suggested that all life has a common ancestor. “All the organic beings which have ever lived on this earth may be descended from some…
Lazarus species raise questions about how the geologic column formed. They are one good reason that we should be thinking about mechanisms other than deep time to account for the order we observe in the fossil record.
Climbing Up and Down Through the Fossil Record
There is significant scientific data consistent with the biblical record of history, EZT represents one scientific theory that seems to explain historical data from the Bible and data from paleontology thought to challenge the Biblical record.
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