Marsupites
Marsupites is an extinct genus of crinoids from the Cretaceous.
| Marsupites Temporal range: Cretaceous | |
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| Marsupites testudinarius fossil | |
| Scientific classification | |
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| Phylum: | |
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| Order: | Uintacrinida |
| Genus: | Marsupites |
Biostratigraphic significance
The International Commission on Stratigraphy (ICS) has assigned the extinction of Marsupites testudinarius as the defining biological marker for the start of the Campanian Stage of the Cretaceous, 83.6 ± 0.2 million years ago.
Sources
- Fossils (Smithsonian Handbooks) by David Ward (Page 173)
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