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''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.〔 == 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. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Bathynotus」の詳細全文を読む スポンサード リンク
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