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Quadragnostus

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Quadragnostus
Temporal range: Cambrian[1]
Fossil
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Trilobita
Genus:
Quadragnostus

Quadragnostus is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the Cambrian Period,[1] which lasted from approximately 542 to 488 million years ago.

References

  1. ^ a b Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Trilobita entry)". Bulletins of American Paleontology. 364: 560. Archived from the original on September 5, 2006. Retrieved 2008-01-12. {{cite journal}}: Cite has empty unknown parameter: |coauthors= (help); Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
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