A CHANGHSINGIAN (LATE PERMIAN) NAUTILOID ASSEMBLAGE FROM GUJIAO, SOUTH CHINA

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TitreA CHANGHSINGIAN (LATE PERMIAN) NAUTILOID ASSEMBLAGE FROM GUJIAO, SOUTH CHINA
Type de publicationJournal Article
Year of Publication2021
AuteursMiao L, Dai X, Korn D, Brayard A, Chen J, Liu X, Song H
JournalPAPERS IN PALAEONTOLOGY
Volume7
Pagination329-351
Date PublishedFEB
Type of ArticleArticle
ISSN2056-2799
Mots-clésCephalopoda, Chan sin gian, China, Guizhou, Nautiloidea, Permian
Résumé

A c. 0.30 m thick cherty limestone bed in the Dalong Formation at Gujiao (Guizhou) has yielded a highly diverse Changhsingian nautiloid assemblage. Its age is late Changhsingian, indicated by the co-occurring ammonoid Pseudotirolites sp. This assemblage is composed of nine species and five taxa in open nomenclature in nine genera, including one new genus and three new species: Neotainoceras zhaoi sp. nov., Nodopleuroceras gujiaoense sp. nov. and Gujiaonautilus longliensis gen. et sp. nov. Sholakoceras is for the first time recorded in South China. Compared with literature data from 52 sites in various regions worldwide, the material described here presents the most diverse Changhsingian nautiloid assemblage. Among the genera of the Gujiao assemblage, Pleuronautilus, Tainoceras and Liroceras are cosmopolitan, while the others are more endemic or genera known so far only from South China.

DOI10.1002/spp2.1275