Biology:Penarosa
From HandWiki
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| Genus: | Penarosa
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Penarosa is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the Middle Cambrian (Ptychagnostus atavus Zone to Ptychagnostus punctuosus Zone),[1] approximately 505 to 500 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. http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=307&rank=class. Retrieved 2008-01-12.
Wikidata ☰ Q16965845 entry
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