| Asthenopsis | |
|---|---|
Fossil | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| Family: | Ptychopariidae |
| Genus: | Asthenopsis Whitehouse, 1939 |
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 2 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.
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