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11 June 2011 The First Silesaurid Dinosauriform from the Late Triassic of Morocco
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Disarticulated material from the Late Triassic Timezgadiouine Formation in the Argana Basin of Morocco represents a new taxon of silesaurid dinosauromorph, Diodorus scytobrachion gen. et sp. nov. D. scytobrachion can be distinguished from other silesaurids by the presence of anteriorly-canted teeth that decrease in size towards the anterior end of the dentary and a distinct lateral ridge running parallel to the dentary alveolar margin. In a phylogenetic analysis, D. scytobrachion is recovered as the sister-taxon to the Brazilian Sacisaurus agudoensis, nested deep within Silesauridae. This new taxon provides further evidence of a near-cosmopolitan range for basal dinosauriforms in the Late Triassic and further demonstrates the disparity of dental morphologies within Silesauridae.

Christian F. Kammerer, Sterling J. Nesbitt, and Neil H. Shubin "The First Silesaurid Dinosauriform from the Late Triassic of Morocco," Acta Palaeontologica Polonica 57(2), 277-284, (11 June 2011).
Received: 24 February 2011; Accepted: 1 June 2011; Published: 11 June 2011

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