Sélaciens nouveaux du London Clay de l'Essex (Yprésien du bassin de Londres)

Cappetta, Henri

doi:10.1016/s0016-6995(76)80024-1

Cited by 29 publications

(19 citation statements)

References 6 publications

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“…Premontriea (Oxyscyllium) gilberti has been reported from early and middle Eocene deposits of Europe (Casier 1946;Cappetta 1976;Bor 1985;Adnet 2006) and central Asia (Case et al 1996). In North America, this species has been previously reported as Scyliorhinus gilberti from the Ypresian of Virginia (Kent 1999a), Georgia (Parmley and Cicimurri 2003), and Mississippi (Case 1994).…”

Section: Descriptionmentioning

confidence: 99%

A new elasmobranch assemblage from the early Eocene (Ypresian) Fishburne Formation of Berkeley County, South Carolina, USA

Case¹,

Cook

Wilson

2015

Can. J. Earth Sci.

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A rich elasmobranch assemblage was recovered from the early Eocene (Ypresian) Fishburne Formation in a limestone quarry at Jamestown, Berkeley County, South Carolina, USA. Reported herein are 22 species belonging to 8 orders, at least 15 families, and 21 genera. It includes the first occurrence of Protoginglymostoma from North America. Many of the reported species have large palaeobiogeographical ranges and inhabited waters on both sides of the Atlantic, whereas others were endemic to the east coast of North America. The paucity of sizeable dentition from several of the larger species in this assemblage, and the apparent absence of relatively large macrophagous species found in contemporaneous deposits elsewhere, suggests the Jamestown site may represent a nursery ground and refuge for young and smaller individuals.

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Section: Descriptionmentioning

confidence: 99%

A new elasmobranch assemblage from the early Eocene (Ypresian) Fishburne Formation of Berkeley County, South Carolina, USA

Case¹,

Cook

Wilson

2015

Can. J. Earth Sci.

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“…Both extant genera ( Manta and Mobula ) have fossil representatives. Between five and nine fossil genera have usually been attributed to mobulids depending on the points of view of palaeoichthyologists, and consist of the following genera: † Paramobula Pfeil, 1981, † Eomobula Herman, Hovestadt‐Euler & Hovestadt, 1989, † Eomanta Pfeil, 1981, † Eoplinthicus Cappetta & Stringer, 2002, † Plinthicus Cope, 1869, † Burhmania Cappetta, 1976, and possibly † Archaeomanta Herman, 1979, † Cretomanta Case, Tokaryk & Baird, 1990, and † Brachyrhizodus Romer, 1942.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

“…Remarks: This genus was erected on material originally placed in the genus Rhinoptera by Woodward (1889, formally as † Rhinoptera daviesi ). Cappetta (1976) attributed this material to a new genus amongst the mobulids on the basis of: an evident reduction of tooth size, an increase in file number (more than eight), and a fine ornamentation rarely planed on the concave occlusal surface, leading to a supposed lack of biomechanical stress as observable in teeth of filter‐feeders and contrary to the benthic batoids with grinding‐type dentition as the rhinopterids. † Burnhamia fetahi illustrates the extreme reduction in tooth size and one can clearly observe anterior cuspidate teeth, lacking in rhinopterid or myliobatid taxa.…”

mentioning

confidence: 99%

Evolutionary history of the devilrays (Chondrichthyes: Myliobatiformes) from fossil and morphological inference

Adnet

Cappetta

Guinot

et al. 2012

Zoological Journal of the Linnean Society

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The exact affinities of the fossil teeth attributed to the devilrays (mobulids) are critical for resolving the debated origin of these giant pelagic rays amongst Myliobatiformes and the timing of their evolution toward planktivory. We performed the first detailed comparative description of teeth belonging to most of the living and fossil mobulids. Based on a survey of living devilrays, three dental morphologies are newly identified as cobblestone tooth plates, comb-like teeth, and peg-like teeth. In addition, all extinct mobulid species are reviewed with comments on their dentition, fossil record, and geographical distribution. As a result, three fossil mobulid taxa are newly described from the Late Eocene of south-west Morocco (Argoubia barbei gen. et sp. nov., Oromobula dakhlaensis gen. et sp. nov., and Eoplinthicus underwoodi sp. nov.). This has permitted the first assessment of the phylogenetic positions of extinct and extant species of mobulids, using cladistic analyses and a combined data set of nondental anatomical characters from the literature and the dental characters defined here. Our new results support the monophyly of mobulids including all living and most extinct species and indicate that mobulids are closely related to rhinopterids. They also indicate that there was a recent split within Mobulidae into the three tooth morphology groups that we describe in this paper. This work provides clues to the evolutionary history of this clade since the Early Eocene, including the gradual lack in tooth interlocking toward the filter-feeding strategy, whereas the preservation of cusped teeth without feeding function in modern filter-feeder mobulids is interpreted as a tool for precopulatory purposes.

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“…In the teeth of mature males of recent Hexanchus , the principal cusp is elongated, a character also seen in fossil species. The misinterpretation of this character as being of specific significance has led to the description of H. hookeri Ward , which subsequently proved to be a junior synonym of H. agassizi Cappetta and perhaps H. gracilis Davis a likely junior synonym of H. microdon Agassiz 1835 (Adnet ). H. microdon is a name usually applied to small, wide fossil teeth, resembling those of the Recent species H. nakamurai Teng , from the late Cretaceous worldwide and from the Palaeogene in North Africa.…”

Section: Hexanchus Microdon (Agassiz 1835) Figure S–ymentioning

confidence: 99%

Crossing the boundary: an elasmobranch fauna from Stevns Klint, Denmark

Adolfssen

Ward

2013

Palaeontology

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The chondrichthyan faunas from the Danish Maastrichtian chalk and the K/T boundary clay, the Fiskeler, are described for the first time. The rich and diverse fauna discovered in the late Maastrichtian chalk experienced a massive drop in diversity prior to the boundary. However, the fauna started to recover immediately after the deposition of the impact layer during earliest Danian times and had regained much of its diversity during the first few millennia after the bolide impact. Precision sampling has made it possible to document the recovery of the fauna, which did not suffer an extinction event of the same magnitude, as apparently observed in Morocco. At Stevns Klint, only 33 per cent of the chondrichthyan fauna became extinct compared with the 96 per cent in Morocco. The drop in diversity before the boundary is attributed to a sudden change in sea level. Among the sharks found in the chalk and Fiskeler are rare species such as Parasquatina and Echinorhinus and the first representative of Nebrius in Europe.

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Sélaciens nouveaux du London Clay de l'Essex (Yprésien du bassin de Londres)

Cited by 29 publications

References 6 publications

A new elasmobranch assemblage from the early Eocene (Ypresian) Fishburne Formation of Berkeley County, South Carolina, USA

A new elasmobranch assemblage from the early Eocene (Ypresian) Fishburne Formation of Berkeley County, South Carolina, USA

Evolutionary history of the devilrays (Chondrichthyes: Myliobatiformes) from fossil and morphological inference

Crossing the boundary: an elasmobranch fauna from Stevns Klint, Denmark

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