Massopoda

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Les Massopoda forment un clade éteint de dinosaures sauropodomorphes qui ont vécu du Trias supérieur au Crétacé supérieur.

Le clade des Massopoda a été créé par le paléontologue américain Adam M. Yates en 2007. Il le définit comme regroupant tous les animaux plus proches de Saltasaurus loricatus que de Plateosaurus engelhardti[1].

Yates rattache le groupe des Massopoda au clade des Plateosauria. Dans les Massopoda, il place les familles des Massospondylidae et des Riojasauridae ainsi que le clade des Sauropoda[3].

Phylogénie[modifier | modifier le code]

Le cladogramme suivant est une version très simplifiée de celui réalisé par Blair McPhee et ses collègues en 2014[4] :

 Massopoda 
 Riojasauridae 

Eucnemesaurus



Riojasaurus





Massospondylidae


 Sauropodiformes 

Yunnanosaurus





Jingshanosaurus



Seitaad




Anchisauria







Le cladogramme suivant des sauropodomorphes basaux, établi par Alejandro Otero et ses collègues en 2015[5], montre à la fois la position des Massopoda parmi les saurischiens, ainsi que les taxons qu'il regroupe jusqu'aux sauropodes :

Saurischia
Herrerasauridae

Herrerasaurus



Staurikosaurus





Eoraptor


Eusaurischia

Agnosphitys


Theropoda

Guaibasaurus




Chindesaurus



Neotheropoda




Sauropodomorpha
Saturnaliinae

Saturnalia



Chromogisaurus





Pantydraco




Thecodontosaurus




Efraasia




Plateosauravus


Plateosauria

Ruehleia


Plateosauridae

Unaysaurus



Plateosaurus



Massopoda
Riojasauridae

Eucnemesaurus



Riojasaurus





Sarahsaurus



Massospondylidae

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1=Adeopapposaurus 2=Leyesaurus }} }}




Jingshanosaurus















Voir aussi[modifier | modifier le code]

Annexes[modifier | modifier le code]

Sur les autres projets Wikimedia :

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Références[modifier | modifier le code]

  1. a et b (en) Yates, Adam M., « Solving a dinosaurian puzzle: the identity of Aliwalia rex Galton », Historical Biology, vol. 19, no 1,‎ , p. 93–123 (DOI 10.1080/08912960600866953)
  2. a et b (en) C. Apaldetti, R. N. Martinez, O. A. Alcober et D. Pol, « A New Basal Sauropodomorph (Dinosauria: Saurischia) from Quebrada del Barro Formation (Marayes-El Carrizal Basin), Northwestern Argentina », PLoS ONE, vol. 6, no 11,‎ , e26964 (PMID 22096511, PMCID 3212523, DOI 10.1371/journal.pone.0026964)
  3. (en) Adam M. Yates, Special Papers in Palaeontology, vol. 77, London, The Palaeontological Assoc., , 9–55 p. (ISBN 978-1-4051-6933-2)
  4. (en) B. W. McPhee, A. M. Yates, J. N. Choiniere et F. Abdala, « The complete anatomy and phylogenetic relationships of Antetonitrus ingenipes(Sauropodiformes, Dinosauria): Implications for the origins of Sauropoda », Zoological Journal of the Linnean Society, vol. 171,‎ , p. 151 (DOI 10.1111/zoj.12127)
  5. (en) Alejandro Otero, Emil Krupandan, Diego Pol, Anusuya Chinsamy et Jonah Choiniere, « A new basal sauropodiform from South Africa and the phylogenetic relationships of basal sauropodomorphs », Zoological Journal of the Linnean Society, vol. 174, no 3,‎ , p. 589 (DOI 10.1111/zoj.12247)