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USA (national)

Wisconsin State Fossil:

Trilobite - click to see all state fossils
Trilobite (species Asaphiscus wheeleri from Utah, USA) photo by DanielCD
on Wikipedia - published under the terms of GNU Free Documentation license
version 1.2 or later. See All State Fossils & Dinosaurs.

Trilobite

See trilobite video below

Wisconsin designated the trilobite (Calymene celebra) as official state fossil in 1985. Related to modern day crabs, lobsters, shrimp, spiders, and insects, this extinct marine arthropod flourished in shallow prehistoric salt waters during the early to middle Paleozoic age.

Trilobite - click to see all state dinosaurs & fossils
An exceptionally well-preserved trilobite with antennæ and legs - photo by Smith609 on Wikipedia - published under terms of the GNU Free Documentation license version 1.2 or later.
See All State Fossils & Dinosaurs.

Like modern arthropods, they had to periodically molt their shells to grow, so one trilobite could have left a dozen or more shed carapaces to fossilize.

Source:
Wisconsin State Symbols: Wisconsin.gov
Links:
All State Fossils & Dinosaurs


    

 

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