| Quadragnostus Temporal range: Cambrian | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Trilobita |
| Order: | Agnostida |
| Family: | Metagnostidae |
| Genus: | Quadragnostus Howell, 1966 |
Quadragnostus is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the Cambrian Period, which lasted from approximately 539 to 485 million years ago.
References
- ^ Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Trilobita entry)". Bulletins of American Paleontology. 364: 560.
| Taxon identifiers | |
|---|---|
| Quadragnostus | |
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