Trilobite
Paleozoic Era
570-230 million years ago
Distant relatives of insects and other animals with jointed legs, trilobites
abounded in the ancient seas. These hard-bodied animals with antennae and compound
eyes disappeared from the fossil record 230 million years ago, during the mass
extinctions that ended the Paleozoic Era. The Museum's trilobite fossils range
from marble-sized to the size of a manhole cover.
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| Life in the Ancient Seas Main Page |
Mosasaur | Basilosaurus | Gastropod |
