Pentagnostus
Pentagnostus is a genus of trilobites restricted to the Middle Cambrian. Its remains have been found in Siberia, Australia, North America, Scandinavia, and Kazakhstan.[1]
Pentagnostus | |
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Pentagnostus brighamensis, 6mm, Spence Formation | |
Scientific classification | |
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Suborder: | Agnostina |
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Genus: | Pentagnostus Lermontova, 1940 |
subgenera | |
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Taxonomy
The probable ancestor of Pentagnostus is Archaeagnostus. Two subgenera can be distinguished. The nominate subgenus occurred first and developed into the later subgenus Pentagnostus (Meragnostus) and the family Ptychagnostidae.[1]
Species and distribution
Subgenus Pentagnostus (Pentagnostus)
Subgenus Pentagnostus (Meragnostus)
References
- Naimark, E.B. (2012). "Hundred species of the Genus Peronopsis Hawle et Corda, 1847". Paleontological Journal. 46 (9): 945–1057. doi:10.1134/S0031030112090018. S2CID 85130465.
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