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Gallery -
Fossils -
Trilobites
6.5"
Psychopyge
21" Trilobite Plate
4" Trilobites
Trilobites are an
extinct class of arthropods.
"Tri-lobe-ite"
alludes to the three part
longitudinal division of their exoskeleton. These
animals first
appeared at the beginning of the
Pre-Cambrian
period approximately 570 million
years ago. They
flourished throughout the early
Paleozoic Era and then
decreased in diversity
until their extinction in the late Permian Period
about 240 million years ago.
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