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Panlongia
''Panlongia'' was a small-sized (up to 2 cm) marine arthropod, with an oval-shaped non-calcified exoskeleton. Both the head shield (or cephalon) and the tail shield (or pygidium) are semi-circular. In between cephalon and pygidium are four thoracic body segments (somites). The cephalon occupies approximately ⅓ of the body length, the thorax ¼ and pygidium about 45%. ''Panlongia'' lived during the late Lower Cambrian (Botomian) in what is today South China. In ''Panlongia spinosa'' the edge of the exoskeleton carries several small sawtooth-like spines, that are absent in ''P. tetranodusa''. == Distribution ==
* ''Panlongia spinosa'' is found in the late Lower Cambrian (Botomian) of China (Wulongqing Formation, only at Gaoloufang Kgs-2). * ''Panlongia tetranodusa'' occurs in the late Lower Cambrian (Botomian) of China (Wulongqing Formation, Gaoloufang Kgs-1, and Shijiangjun Wsh-14, Wuding County, Yunnan, "Guanshan fauna").〔
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「Panlongia」の詳細全文を読む
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