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Coosella is an
extinct genus from a well-known
class of
fossil marine arthropods, the trilobites. It
lived from 501 to 490
million years ago
during the...
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Coosella helena is an
extinct marine species of
trilobite from the
middle to
upper Cambrian period.
Fossils of this
species can be
found in
North America...
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Agraulos 1847
Menevia Formation Jince Formation Manuels River Formation Coosella 1936
Norwoodia 1916
Tricrepicephalus 1935
Chefu Formation Deadwood Formation...
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comparable form †Clelandia †Clelandia
typicalis †
Coosella †
Coosella onusta †
Coosella perplexa †
Coosella prolifica †Coosia †Coosia
albertensis †Coosia alethes...
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including Crepicephalus, Cedaria, Llanoaspidella, and
Blountia kindlei Resser,
Coosella brevis Resser,
Kingstonia ara (Walcott), K.
kindlei Resser, and
other Kingstonia...
- †Coccosteus †Coelacanthus †Composita †Composita
subtilita †Conotheca †
Coosella †Coosia †Cordaites †Cornulites †Cornulites
flexuosus †Craniops †Crepicephalus...
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Conophrys Conopolus Conoredlichia Constantina Constrictella Contracheirurus Coosella (=Wilsonella)
Coosia Coosina Coosinoides Coplacoparia Corbinia Corcorania...
- †Columnaria †Columnaria
halli †Constellaria †Constellaria
prominens †
Coosella †
Coosella curticei †Coosia †Coosia
superba †Cordaites †Cordaites
communis †Cordaites...
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opressa – or
unidentified comparable form †
Coosella †
Coosella convexa – type
locality for
species †
Coosella vulgaris – type
locality for
species †Coosia...
- been
excavated from the
Upper Cambrian of the
United States (Dresbachian,
Coosella zone,
Riley Formation,
Central Texas, 30.3° N, 97.7° W) G. bigranulosa...
