First Mesozoic record of the stingray Myliobatis wurnoensis from Mali and a phylogenetic analysis of Myliobatidae incorporating dental characters

Claeson, Kerin M., O'Leary, Maureen A., Roberts, Eric M., Sissoko, Famory, Bouaré, Mamadou, Tapanila, Leif, Goodwin, David, and Gottfried, Michael D. (2010) First Mesozoic record of the stingray Myliobatis wurnoensis from Mali and a phylogenetic analysis of Myliobatidae incorporating dental characters. Acta Palaeontologica Polonica, 55 (4). pp. 655-674.

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Abstract

New specimens, including the first record of lower dental plates, of the extinct myliobatid Myliubatis wurnoensis were recovered from the Maastrichtian (Late Cretaceous) of the Iullemmeden Basin, Mali, and are the oldest record of the taxon. We evaluated the phylogenetic position of this taxon with reference to other myliobatids (extinct and extant) using osteology and dentition. Our results indicate that Myliobatinae and Myliobatis are each paraphyletic, and that Aetobatus and Rhinoptera are monophyletic. We also found that taxa known only from the Cretaceous, Brachyrhizodus and Igdabatis, are highly nested within Myliobatidae. The phylogenetic position of these taxa unambiguously extends the origin of Myliobatidae and most of its representative taxa into the Mesozoic.

Item ID: 15754
Item Type: Article (Research - C1)
ISSN: 1732-2421
Keywords: Chondrichthyes, Myliobatidae, Myliobatiformes, dentition, batoid, ghost lineage, phylogeny, Cretaceous, Maastrichtian, Mali
Date Deposited: 18 Mar 2011 01:18
FoR Codes: 04 EARTH SCIENCES > 0403 Geology > 040308 Palaeontology (incl Palynology) @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970104 Expanding Knowledge in the Earth Sciences @ 100%
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