globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2016.12.044
论文题名:
Direct evidence of trophic interaction between a large lamniform shark, Cretodus sp., and a marine turtle from the Cretaceous of northeastern Italy
作者: Amalfitano J.; Dalla Vecchia F.M.; Giusberti L.; Fornaciari E.; Luciani V.; Roghi G.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2017
卷: 469
起始页码: 104
结束页码: 121
语种: 英语
英文关键词: Cretaceous ; Lamniform shark ; Predation/Scavenging ; Swallowed marine turtle ; Taphonomy ; Trophic interaction
英文摘要: In the nineties of the 20th century, a large and partially articulated skeleton of a lamniform shark was discovered in Upper Cretaceous hemipelagic beds of the Venetian Prealps of northeastern Italy. The shark, dating back to the middle Turonian, is here ascribed to Cretodus and represents the first record of this genus in Italy. The fossil is the most complete specimen of Cretodus so far discovered and includes 120 teeth, 86 vertebral centra and many placoid scales. Closely associated with the remains of the shark (estimated total length over 6.5 m) is a pellet-like accumulation of partially broken bones belonging to a large chelonioid turtle (about 2 m of estimated total length). Some of the bones show evidence of damages referable to bites and possible acid etching. Because of this, and because of their position in correspondence of the abdominal region of the shark, the turtle remains are interpreted as stomach content. The taphonomy of this association is discussed and compared with other fossil records of shark predation/scavenging and with lamniform shark-chelonioid turtle interactions in modern marine environment. The Italian fossil represents the second evidence of a turtle swallowed by a shark in the fossil record and a direct evidence of the possible dietary preference of Cretodus, adding some evidence for discerning scavenging from predatory lifestyle. © 2017 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/67936
Appears in Collections:过去全球变化的重建

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作者单位: Department of Geosciences, University of Padova, Via Gradenigo 6, Padova, Italy; Soprintendenza per i Beni Archeologici del Friuli Venezia Giulia, Nucleo Operativo di Udine, Via Zanon 22, Udine, Italy; Department of Physics and Earth Sciences, Ferrara University, Polo Scientifico Tecnologico, Via G. Saragat 1, Ferrara, Italy; Institute of Geosciences and Earth Resources, CNR, Via Gradenigo 6, Padova, Italy

Recommended Citation:
Amalfitano J.,Dalla Vecchia F.M.,Giusberti L.,et al. Direct evidence of trophic interaction between a large lamniform shark, Cretodus sp., and a marine turtle from the Cretaceous of northeastern Italy[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2017-01-01,469
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