湖南零陵晚泥盆世叶虾类一新种——Echinocaris hunanensis sp. nov.

描述了湖南零陵普利桥晚泥盆世锡矿山组叶虾类一新种——Echinocaris hunanensis sp.nov..晚古生代叶虾类化石较为稀少,Echinocaris在亚洲是首次发现.

A NEW SPECIES OF ECHINOCARIS (PHYLLOCARIDA) IN LATE DEVONIAN FROM LINGLING, HUNAN

Echinocaris hunanensis sp. nov. was found from the Bailiping village of Puliqiao, Lingqing county, Hunan. The two fossil specimens were collected from the marl with grey calcareous shale, belonging to the same genus and species, and dose y associated with "Productella" lachrymasa var. asiatica Tien, Yunnanellina hanburyi (Davidson), Y. triplicata Grabau, Y. obesa Tien, Y. unipicata Grabau, Cyrtospirifer pellizzarii (Grabau), Cyrtiopsis graciosa Grabau, C. davidsoni Grabau, C. kayseri Grabau, and Tenticospirifer tenticulum (Verneuil). While discussing the Upper Devonian Yunnanella-Yunnanellina (Brachiopoda) Fauna from Hunan, Xu Hankui (1978) divided the brachiopods of Xikuangshan into 3 fossil assemblages, among which the lowest assemblage contains brachiopods which are similar to those listed in the brachiopod assemblage of Puliqiao, but it contains a large number of Cyrtospirifer and a small number of Tenticospirifer and Athyris. Therefore, based on the brachiopod assemblages, the strata bearing Echinocaris hunanensis sp. nov. are corresponding to those yielding the Yunnanellina hanburyi-Cyrtiopsis davidsoni assemblages, that is, below the Xikuangshan Formation of Upper Devonian.