浙江长兴组空棘鱼一新种

New Species of Coelacanth from Changxing Formation of Zhejiang

记述了采自浙江长兴长兴组层型剖面的一件空棘鱼化石，标本经记述对比研究后，认为它代表空棘鱼一新种，命名为魏氏长兴鱼（新种）Ｃｈａｎｇｘｉｎｇｉａｗｅｉｓｐ．ｎｏｖ．．

The specimen dealt with in this paper,named as a new species of coelacanth—?Changxingia weii sp. nov.,was collected from the lower part of the Meishan Member,Changxing Formation(Upper Permian),Changxing district,Zhejiang. Crossopterygii Coelacanthiformes Coelacanthidae Agassiz,1843 Changxingia Wang et Liu,1981 Changxingia weii sp.nov. Type:A fish.The dorsal fin,anal fin and the back part of the caudal fin are absent(Zhejiang Museum of Nature History,M40). Locality and Geological Age:Changxing County,Zhejiang Province;Changxing Formation(Upper Permian). Diagnosis:A fish of moderate size.Opercular is triangular and large.Extrascapulars,four in number each side,are small.The fish has the typical coelacanthid axial skeleton which with 77 neural arches.The number of lepidotrichia in upper lobes is 25 and lower 21. Discussion:This coelacanthid lived in Permian marine environment,which has typical coelacanthid axial skeleton with 77 neural arches.The numbers of lepidotrichia in upper and lower lobes are unequal.For this,the specimen belongs to Changxingia. The Changxingia has only one species—? 獵hangxingia aspratilis. The specimen differs from the Changxingia aspratilis in the number of neural arches and lepidotrichia in upper and lower lobes.We think that the specimen represents a new species.We call it Changxingia weii sp.nov.