Bathynotus

Phylum:Arthropoda

Clade:†Artiopoda

Class:†Trilobita

Order:†Redlichiida

Bathynotus Temporal range: 517 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓ late Botomian
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Clade:	†Artiopoda
Class:	†Trilobita
Order:	†Redlichiida
Family:	†Chengkouaspidae
Genus:	†Bathynotus Hall, 1860.[1][2]
Species
Bathynotus holopygus (Hall, 1859) (Type)[3] Bathynotus elongatus Zhao, Gong & Wang, 1987[2] Bathynotus kueichouensis Lu in Wang et al, 1964[2]

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]