Entomaspis
| Entomaspis Temporal range: Upper Cambrian-Earliest Ordovician
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|---|---|
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| E. radiata | |
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | †Trilobita |
| Order: | †Harpetida |
| Family: | †Entomaspididae |
| Genus: | †Entomaspis Ulrich, 1931 |
| Type species | |
| Entomaspis radiata Ulrich, 1931
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| Species | |
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Entomaspis is an extinct genus of harpetid trilobite from Upper Cambrian to Early Ordovician marine strata of the United States. Species are typified by their proportionally large, vaulted, croissant-shaped or bonnet-shaped cephalons that have the cheeks freed to become elongated, curved librigenial spines, and by their comparatively large, crescent-shaped eyes (in comparison with other eyed harpetids).
Species[]
E. bridgei[]
E. bridgei is a species found in marine strata of Missouri.
E. clarki[]
E. clarki is a species found in Lower Ordovician marine strata of Vermont.[1]
E. radiata[]
E. radiata is the type species, and is found in Uppermost Cambrian and Lowermost Ordovician marine strata of Utah. It coexisted sympatrically with .
E. rawi[]
E. rawi was originally described as Hypothetica rawi, and coexisted with E. radiata in Lowermost Ordovician marine strata of Utah.[2]
References[]
- ^ Shaw, Alan B. "Paleontology of Northwestern Vermont. XII. Fossils from the Ordovician Highgate Formation." Journal of Paleontology (1966): 1312-1330.
- ^ Moore, R.C. (1959). Arthropoda I - Arthropoda General Features, Proarthropoda, Euarthropoda General Features, Trilobitomorpha. Treatise on Invertebrate Paleontology. Vol. Part O. Boulder, Colorado/Lawrence, Kansas: Geological Society of America/University of Kansas Press. pp. 1–560, 419. ISBN 0-8137-3015-5.
Sources[]
External links[]
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- Harpetida
- Cambrian trilobites
- Ordovician trilobites
- Fossils of the United States
- Librostoma stubs