Bathynotus
Extinct genus of trilobites
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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]
| Bathynotus Temporal range: late Botomian | |
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Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Clade: | †Artiopoda |
| Class: | †Trilobita |
| Order: | †Redlichiida |
| Family: | †Chengkouaspidae |
| Genus: | †Bathynotus Hall, 1860.[1][2] |
| Species | |
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.
