Journal article

An abelisauroid (Dinosauria: Theropoda) from the early Jurassic of the high atlas mountains, Morocco, and the radiation of Ceratosaurs

  • Allain, Ronan Cadi Ayyad University, Faculty of Sciences Semlalia, Department of Earth Sciences, Laboratory of Paleontology and Biostratigraphy, Marrakech, Morocco - Département Histoire de la Terre, Laboratoire de Paléontologie, Muséum National d'Histoire Naturelle, Paris, France
  • Tykoski, Ronald Museum of Nature and Science, Dallas, USA
  • Aquesbi, Najat Ministry of Energy and Mines, Institut Agdal, Rabat, Morocco
  • Jalil, Nour-Eddine Cadi Ayyad University, Faculty of Sciences Semlalia, Department of Earth Sciences, Laboratory of Paleontology and Biostratigraphy, Marrakech, Morocco
  • Monbaron, Michel Département de Géosciences, Université de Fribourg, Switzerland
  • Russell, Dale Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, Raleigh, USA
  • Taquet, Philippe Département Histoire de la Terre, Laboratoire de Paléontologie, Muséum National d'Histoire Naturelle, Paris, France
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    2007
Published in:
  • Journal of Vertebrate Paleontology. - 2007, vol. 27, no. 3, p. 610–624
English The fossil record of abelisauroid carnivorous dinosaurs was previously restricted to Cretaceous sediments of Gondwana and probably Europe. The discovery of an incomplete specimen of a new basal abelisauroid, Berberosaurus liassicus, gen. et sp. nov., is reported from the late Early Jurassic of Moroccan High Atlas Mountains. Phylogenetic analysis recovers Ceratosauroidea and Coelophysoidea as sister lineages within Ceratosauria, and Berberosaurus as a basal abelisauroid. Berberosaurus is the oldest known abelisauroid and extends the first appearance datum of this lineage by about 50 million years. The taxon bridges temporal, morphological, and phylogenetic gaps that have hitherto separated Triassic to Early Jurassic coelophysoids from Late Jurassic through Cretaceous ceratosauroids. The discovery of an African abelisauroid in the Early Jurassic confirms at least a Gondwanan distribution of this group long before the Cretaceous.
Faculty
Faculté des sciences et de médecine
Department
Département de Géosciences
Language
  • English
Classification
Paleontology
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/300228
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