Arid
DOI10.1080/02724634.2014.838574
A REVISION OF THE UPPER CRETACEOUS LEPIDOSIRENID LUNGFISHES FROM THE QUSEIR FORMATION, WESTERN DESERT, CENTRAL EGYPT
Claeson, Kerin M.1; Sallam, Hesham M.2; O’Connor, Patrick M.3,4; Sertich, Joseph J. W.5
通讯作者Claeson, Kerin M.
来源期刊JOURNAL OF VERTEBRATE PALEONTOLOGY
ISSN0272-4634
EISSN1937-2809
出版年2014
卷号34期号:4页码:760-766
英文摘要

We evaluate new lungfish remains from the Upper Cretaceous Quseir Formation in the Western Dessert of southern Egypt. Taxa include Lavocatodus protopteroides, L. humei, L. giganteus, and Protopterus nigeriensis. We treat Lavocatodus as members of Lepidosirenidae based on the presence of a well-defined medial articular surface, in the absence of a symphyseal surface of corresponding prearticular bones. Material of L. protopteroides represents the first example of an adult specimen, supporting the retention of the species as valid, and not a junior synonym of L. humei. Specimens of L. humei are the most abundant in the assemblage, and all exhibit the medial articular surface, a feature that is absent from specimens of Ceratodus; therefore, we reassign additional specimens of ’C.’ humei to Lavocatodus. New specimens of L. giganteus extend the temporal and spatial ranges of the species (the type material of L. giganteus is from Paleocene deposits of In Farghas, Mali). Finally, a new specimen of Protopterus represents the oldest record of the genus in Egypt. The prearticular is confidently assigned to Protopterus based on the presence of only three ridges on the tooth plate, a medial symphyseal suture, a coronoid process, and a shallow tooth crown plus prearticular depth. We further assign it to P. nigeriensis based the length and merger of tooth ridges. Furthermore, the oldest Cenomanian specimens reported from the Sudan Wadi Milk Formation are assigned to P. nigeriensis, which would extend the temporal range of P. nigeriensis by roughly 14 Ma.


类型Article
语种英语
国家USA ; Egypt
收录类别SCI-E
WOS记录号WOS:000340133600002
WOS关键词DIPNOI ; SARCOPTERYGII ; ARGENTINA ; SKELETON ; EOCENE ; FOSSIL ; GENUS
WOS类目Paleontology
WOS研究方向Paleontology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/183732
作者单位1.Philadelphia Coll Osteopath Med, Dept Anat, Philadelphia, PA 19131 USA;
2.Mansoura Univ, Dept Geol, Mansoura 35516, Egypt;
3.Ohio Univ, Heritage Coll Osteopath Med, Dept Biomed Sci, Athens, OH 45701 USA;
4.Ohio Univ, Ohio Ctr Ecol & Evolutionary Studies, Athens, OH 45701 USA;
5.Denver Museum Nat & Sci, Dept Earth Sci, Denver, CO 80205 USA
推荐引用方式
GB/T 7714
Claeson, Kerin M.,Sallam, Hesham M.,O’Connor, Patrick M.,et al. A REVISION OF THE UPPER CRETACEOUS LEPIDOSIRENID LUNGFISHES FROM THE QUSEIR FORMATION, WESTERN DESERT, CENTRAL EGYPT[J],2014,34(4):760-766.
APA Claeson, Kerin M.,Sallam, Hesham M.,O’Connor, Patrick M.,&Sertich, Joseph J. W..(2014).A REVISION OF THE UPPER CRETACEOUS LEPIDOSIRENID LUNGFISHES FROM THE QUSEIR FORMATION, WESTERN DESERT, CENTRAL EGYPT.JOURNAL OF VERTEBRATE PALEONTOLOGY,34(4),760-766.
MLA Claeson, Kerin M.,et al."A REVISION OF THE UPPER CRETACEOUS LEPIDOSIRENID LUNGFISHES FROM THE QUSEIR FORMATION, WESTERN DESERT, CENTRAL EGYPT".JOURNAL OF VERTEBRATE PALEONTOLOGY 34.4(2014):760-766.
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