Some observations on Denaea fournieri (Chondrichthyes, Symmoriiformes) from the Lower Carboniferous of Belgium

• Autorzy: Maisey J.
• Konferencja: Evolution and Diversity of Chondrichthyans (2008 ; Warszawa)
• Języki publikacji: EN

Abstrakty

EN

Preliminary observations are presented concerning endoskeletal morphology in the Lower Carboniferous symmoriiform shark Denaea fournieri, and some problems in the original description are highlighted. D. fournieri almost certainly possessed a tropibasic braincase and its cranial morphology agrees in most respects with that observed in other symmoriiforms, although it had an extremely narrow ethmoidal region and may have lacked supraorbital cartilages. Its pectoral fins were probably similar to those of other symmoriiforms, and the radialbearing margin of its metapterygium most closely resembles that of falcatids and Stethacanthulus. Using Cladoselache as an outgroup, several apomorphic characters are identified in symmoriiform pectoral fins.

Słowa kluczowe

EN

Belgium; Chondrichthyes; Denaea; Lower Carboniferous; Marbre Noir; Symmoriiformes

PL

Belgia; Chondrichthyes; Denaea; dolny karbon; Symmoriiformes

• Wydawca: Faculty of Geology of the University of Warsaw ; Komitet Nauk Geologicznych PAN
• Czasopismo: Acta Geologica Polonica
• Rocznik: 2008
• Tom: Vol. 58, no. 2
• Strony: 185--190
• Opis fizyczny: Bibliogr. 18 poz.,fot., rys.,

Twórcy

autor

Maisey J.

• Division of Paleontology, American Museum of Natural History, 79th Street and Central Park West, New York, NY 10024-5193, U.S.A.,

Bibliografia

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