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Bathyal sharks from the middle Pliocene of the Romagna Apennines (Italy)

机译:Romagna亚平宁山脉(意大利)中上新世的深海鲨

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摘要

Bathyal shark teeth are described from middle Pliocene marine sediments of the Rio Merli, Rio dei Ronchi, Rio Co di Sasso, and Rio Cugno sections cropping out near the Brisighella and Riolo Terme villages (Ravenna), in the Romagna Apennines. The teeth are referred to the species Scymnodon cf. ringens, Centrophorus cf granulosus, Deania aff. calcea, and Pristiophorus sp. representing the first record of bathyal sharks for the Romagna region. These new data fill partly the stratigraphic gap that characterizes the Plio-Pleistocene deep-water elasmobranch record in the Mediterranean. Paleobiogeographic and paleoecologic implications are discussed.
机译:从Roma Merli,Rio dei Ronchi,Rio Co di Sasso和Rio Cugno等地区的上新世海洋沉积物中描述出了y状鲨齿,这些区域是在罗马涅亚平宁山脉的Brisighella和Riolo Terme村庄(Ravenna)附近种植的。牙齿被称为物种Scymnodoncf。林根,Centroporus cf granulosus,迪亚尼亚calcea和Pristiophorus sp。代表Romagna地区的第一条深海鲨鱼记录。这些新数据部分填补了地层空白,这是地中海上的上新世深水弹性分支记录的特征。讨论了古生物地理学和古生态学意义。

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