DOI: 10.1016/j.palaeo.2016.02.024
论文题名: Why so many dipnoans? A multidisciplinary approach on the Lower Cretaceous lungfish record from Tunisia
作者: Fanti F. ; Larocca Conte G. ; Angelicola L. ; Cau A.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 449 起始页码: 255
结束页码: 265
语种: 英语
英文关键词: Dipnoi
; Lower cretaceous
; Paleoecology
; Taphonomy
; Tunisia
英文摘要: The Lower Cretaceous record of vertebrates from Africa is problematic as the majority of fossil localities lack adequate stratigraphic and paleoecological data when compared with coeval Laurasian deposits. Thereby, our comprehension of paleocommunities and paleobiogeographic patterns may be affected by the lack of multidisciplinary approach. Among taxonomically and paleoecological significant clades, lungfishes (Sarcopterygii, Dipnoi) are commonly found in the Cretaceous fresh water, brackish and marginal-marine deposits of Gondwana, although identifiable elements are limited to isolated tooth plates. We provide the first taxonomic identification of dipnoans from the Ain el Guettar Formation of southern Tunisia (Oum ed Diab member, Albian). Identification of tooth plates based on morphological parameters and phylogenetic analyses indicates the co-occurrence in a discrete stratigraphic unit of at least five lineages referable to Equinoxiodus, Neoceratodus, Asiatoceratodus and/or Ferganoceratodus, Ceratodus, and Lavocatodus. This unusually high diversity is unparalleled in the fossil record and is also challenged by an actualistic comparison with extant taxa. We suggest that a series of taphonomic factors significantly inflated observed lungfish diversity in the estuarine and marginal-marine deposits of the Oum ed Diab member. Therefore, we recognize the fossil fauna as representative of a larger, inland paleo-hydrographic system. This study confirms the paleoecological scenario resulted from the analyses on terrestrial reptiles from the Oum ed Diab member. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68470
Appears in Collections: 过去全球变化的重建
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作者单位: Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Alma Mater Studiorum, Università di Bologna, Via Zamboni 67, Bologna, Italy; Museo Geologico Giovanni Capellini, Via Zamboni 63, Bologna, Italy
Recommended Citation:
Fanti F.,Larocca Conte G.,Angelicola L.,et al. Why so many dipnoans? A multidisciplinary approach on the Lower Cretaceous lungfish record from Tunisia[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,449