Coosina

Coosina; Temporal range: Dresbachian
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Trilobita
Order:	Ptychopariida
Genus:	Coosina

Last updated July 29, 2025

Coosina is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived from approximately 501 to 490 million years ago during the Dresbachian faunal stage of the late Cambrian Period.^[1]^[2] It is one of the oldest fossils.

References

1 2 Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Trilobita entry)". Bulletins of American Paleontology. 364: 560. Archived from the original on 2006-09-05. Retrieved 2008-01-12.
↑ Rasetti, Franco (1956). "Revision of the Trilobite Genus Maryvillia Walcott". Journal of Paleontology. 30 (5): 1266–1269. ISSN 0022-3360. JSTOR 1300626.

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[Sepkoski-1] 1 2 Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Trilobita entry)". Bulletins of American Paleontology. 364: 560. Archived from the original on 2006-09-05. Retrieved 2008-01-12.

[2] Rasetti, Franco (1956). "Revision of the Trilobite Genus Maryvillia Walcott". Journal of Paleontology. 30 (5): 1266–1269. ISSN 0022-3360. JSTOR 1300626.

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