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Taxonomy Morphology Masticatory Function and Phylogeny of Heterodontosaurid Dinosaurs

14 View(s), published at 2012-10-03, written by Paul C. Sereno, published by PenSoft Publishers LTD
Taxonomy Morphology Masticatory Function and Phylogeny of Heterodontosaurid Dinosaurs

Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs by Paul C. Sereno This major study on heterodontosaurid dinosaurs is the first to review the taxonomy, morphology, functional anatomy, and phylogeny of this important early radiation of small-bodied herbivores. Heterod.... Published date on: 2012-10-03 with total page: 225 pages. Publisher of Taxonomy, Morphology, Masticatory Function and Phylogeny of Heterodontosaurid Dinosaurs is PenSoft Publishers LTD.

This major study on heterodontosaurid dinosaurs is the first to review the taxonomy, morphology, functional anatomy, and phylogeny of this important early radiation of small-bodied herbivores. Heterodontosaurids persisted for approximately 100 My, from Late Triassic to Early Cretaceous time, during which they evolved some of the most sophisticated dentitions for processing plant materials. Some species required reevaluation to establish unequivocally their status as heterodontosaurids, such as Echinodon from rocks in southern England, one of the first and smallest dinosaurs ever described. Tianyulong from northern China is described in more detail in the study and is shown to have unusual skeletal proportions, including a relatively large skull and very short forelimb. A new taxon, Pegomastax africanus gen. n. sp. n., is described from southern Africa with a short parrot-shaped bill. Tooth replacement and tooth-to-tooth wear is more common than previously thought among heterodontosaurids, which the author argues are herbivores despite their prominent caniniform teeth. Heterodontosaurds appear to have split early in their history into a northern group with primitive, subtriangular crowns and a southern group with deeper crown proportions.

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