Bathynotus
| Bathynotus Temporal range: late Botomian
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Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Clade: | †Artiopoda |
| Class: | †Trilobita |
| Order: | †Redlichiida |
| Family: | †Chengkouaspidae |
| Genus: | †Bathynotus Hall, 1860.[1][2] |
| Species | |
Bathynotus is a genus of trilobites of the family Chengkouaspidae. Its fossils have been found in the paleocontinents Laurentia (specifically in what are now Nevada and Vermont), Gondwana (in South China and South-Australia), and - doubtfully - Siberia. It is characterized by a very wide axis in the thorax and an enlarged 11th segment that bears a long, backwardly directed spine on each side. Additionally, the 12th and 13th segments are narrow and fuse with the edge of the spine of the 11th segment.[2]
Etymology
Bathynotus is derived from the Greek words βαθυς -bathus- meaning "ample"; and νοτος -notos- meaning "back", for the very wide axis of the thorax. The species names are derived as follows.
- elongatus means lengthened, for the greater body length of this species.
- holopygus means entire shield, for the pygidium that has a smooth border.
- kueichoensis comes from Kweichow (now Guizhou Province) in China where this species was collected.
References
- ^ Hall (1860). "Contributions to Palaeontology 1858-1859". Thirteenth Annual Report of the New York State Cabinet of Natural History: 117–119.
- ^ a b c d Peng, Jin; Zhao, Yuanlong; Yuan, Jinliang; Yao, Lu; Yang, Hong (2009). "Bathynotus: A key trilobite taxon for global stratigraphic boundary correlation between Cambrian Series 2 and Cambrian Series 3". Progress in Natural Science. 19: 99–105. doi:10.1016/j.pnsc.2008.03.034.
- ^ Hall (1859). "Contributions to Palaeontology of New York; being some of the results of the Investigations made during the years 1855, 1856, 1857 and 1858". Twelfth Annual Report of the New York State Cabinet of Natural History: 61.
External links
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