Micraster
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Micraster
| Micraster Temporal range: Late Cretaceous |
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| Micraster sp. fossil at the Geological Museum, Copenhagen | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Class: | Echinoidea |
| Subclass: | Euechinoidea |
| Order: | Spatangoida |
| Genus: | Micraster Agassiz, 1836 |
Micraster is an extinct genus of echinoid from the Late Cretaceous. Its remains have been found in Africa, Antarctica, Europe, and North America. Micraster was an infaunal echinoid living in a burrow below the sediment surface. the test is clearly bilateral and there is a deep anterior groove to take in water containing organic particles to the mouth. The tube feet keep a supply of nutrient-laden water moving into the burrow. The anus has a waste tube behind it.
Sources
- Fossils (Smithsonian Handbooks) by David Ward (Page 185)
External links
- Micraster in the Paleobiology Database
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