Evolution What the Fossils Say and Why it Matters

Jawless

fishes

Sharks

Ray-finned fish

Lobe-finned fish

Echinodermata

Amphibians

Lizards and

snakes

Crocodiles

Birds

Dinosaurs

Turtles

Synapsida

First

amphibians

Mammalia

Part I

EVOLUTION AND THE FOSSIL RECORD

The modern geologic time scale (left) and a simplified “tree of life” showing the branching sequence of the

major groups of modern animals. Contrary to creationist “flood geology” misconceptions, most lineages

of primitive marine animals are not just found on the lower strata, but span all of geologic time, and have

modern representatives as well.

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