An exceptionally large specimen of Permian ammonoid genus Shengoceras is reproted from Guangxi, South China. The giant size and the matured stage of the suture extend the definition of this genus and its subfamily in ...An exceptionally large specimen of Permian ammonoid genus Shengoceras is reproted from Guangxi, South China. The giant size and the matured stage of the suture extend the definition of this genus and its subfamily in taxonomy of Permian cyclolobids.展开更多
The Permian Artinskian age of the Longyin Formation is indicated by the appearanceof the ammonoid Popanoceras fauna at its lowermost part. The upper Maping Formationin South China should include all the Sakmarin depos...The Permian Artinskian age of the Longyin Formation is indicated by the appearanceof the ammonoid Popanoceras fauna at its lowermost part. The upper Maping Formationin South China should include all the Sakmarin deposit at least.展开更多
文摘An exceptionally large specimen of Permian ammonoid genus Shengoceras is reproted from Guangxi, South China. The giant size and the matured stage of the suture extend the definition of this genus and its subfamily in taxonomy of Permian cyclolobids.
文摘The Permian Artinskian age of the Longyin Formation is indicated by the appearanceof the ammonoid Popanoceras fauna at its lowermost part. The upper Maping Formationin South China should include all the Sakmarin deposit at least.