Biology:Asthenopsis
From HandWiki
| Asthenopsis | |
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Fossil
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| Family: | Ptychopariidae
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| Genus: | Asthenopsis Whitehouse, 1939
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Asthenopsis 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
- ↑ 1.0 1.1 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. https://web.archive.org/web/20060905162524/http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=307&rank=class. Retrieved 2008-01-12.
Wikidata ☰ Q4810838 entry
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