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1 January 2010 Rhombichthys intoccabilis, gen. et sp. nov. (Ellimmichthyiformes, Clupeomorpha, Teleostei), from the Cenomanian (Upper Cretaceous) of Ein Yabrud, Middle East: Anatomical Description and Phylogenetic Implications
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Abstract

A new double-armored member of the Ellimmichthyiformes (Clupeomorpha, Teleostei) is described from the Cenomanian (Upper Cretaceous) of Ein Yabrud, near Ramallah, Middle East. The anatomical description of Rhombichthys intoccabilis, gen. et sp. nov., is based on 13 subcomplete or incomplete acid-prepared specimens. This taxon shows several remarkable characters such as an important dorsoventral elongation of the lateral wings of the ventral scutes that give an apex-shaped ventral profile in the biggest specimens. Some dorsal fin rays are very extended and branched, and the dorsal fin extends along the major part of the dorsal margin of the body. Rhombichthys intoccabilis, gen. et sp. nov., shares the synapormorphies of the family Paraclupeidae and the subfamily Paraclupeinae. It appears closely related to the genera Triplomystus and Ezkutuberezi, mainly in the basis of the shape of dorsal and ventral scutes and the absence of a hypural diastema.

© 2010 by the Society of Vertebrate Paleontology
Bouziane Khalloufi, René Zaragüeta-Bagils, and Hervé Lelièvre "Rhombichthys intoccabilis, gen. et sp. nov. (Ellimmichthyiformes, Clupeomorpha, Teleostei), from the Cenomanian (Upper Cretaceous) of Ein Yabrud, Middle East: Anatomical Description and Phylogenetic Implications," Journal of Vertebrate Paleontology 30(1), (1 January 2010). https://doi.org/10.1080/02724630903409089
Received: 15 March 2008; Accepted: 1 March 2009; Published: 1 January 2010
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