Bathynotus

Bathynotus
Temporal range: 517 Ma
↓
 late Botomian
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Trilobita
Order:
Redlichiida
Suborder:
Bathynotina
Family:
Bathynotidae
Genus:
Bathynotus

Hall, 1860.[1][2]
Species
  • B. holopygus (Hall, 1859) (Type)[3]
  • B. elongatus Zhao, Gong & Wang, 1987[2]
  • B. kueichouensis Lu in Wang et al, 1964[2]

Bathynotus is a genus of trilobites of the family Bathynotidae. 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

  1. ^ Hall (1860). "Contributions to Palaeontology 1858-1859". Thirteenth Annual Report of the New York State Cabinet of Natural History: 117–119.
  2. ^ 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.
  3. ^ 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.


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