Kimmerosaurus

Kimmerosaurus langhami

Kimmerosaurus
Description de cette image, également commentée ci-après
Vue d'artiste de Kimmerosaurus.
150.8–145 Ma
2 collections
Classification Paleobiology Database
Règne Animalia
Embranchement Chordata
Classe Reptilia
Super-ordre  Sauropterygia
Ordre  Plesiosauria
Sous-ordre  Plesiosauroidea
Famille  Cryptoclididae

Genre

 Kimmerosaurus
Brown (d), 1981

Espèce

 Kimmerosaurus langhami
Brown (d), 1981

Kimmerosaurus (« lézard de Kimmeridge ») est un genre fossile de plésiosaures de la famille des Cryptoclididae dont une seule espèce est connue, Kimmerosaurus langhami.

Historique

Le genre Kimmerosaurus et l'espèce Kimmerosaurus langhami sont décrits en 1981 par le paléontologue David S. Brown (d)[1],[2],[3]

Fossiles

Selon Paleobiology Database en 2024, le nombre de collections référencées de fossiles est de deux[2]. Ces collections sont du Tithonien inférieur du Jurassique supérieur, c'est-à-dire datent de 150,8 à 145 Ma avant notre ère[2].

Famille

Selon Paleobiology Database en 2024, ce genre est désormais classé dans la famille des Cryptoclididae selon Benson et Druckenmiller en 2014[2].

Étymologie

La première partie du nom du genre Kimmerosaurus vient de la formation géologique d'âge jurassique supérieur de la Kimmeridge Clay en Angleterre, où les premiers fossiles de ce genre ont été découverts. La deuxième partie vient du grec « σαυρος (sauros) » qui signifie « lézard ».

Son nom spécifique, langhami, lui a été donné en l'honneur de R. A. Langham de Reading dans le Berkshire (Sud de l'Angleterre), qui a trouvé le crâne holotype en 1967[4].

Description

Kimmerosaurus est connu uniquement à partir d'un seul crâne. À cause de cela, une description de l'animal est difficile. On estime prudemment sa taille à environ six mètres de longueur. Cependant, il est possible qu'il soit synonyme de Colymbosaurus, qui est également connu seulement à partir de matériaux post-crânien.

Classification

Ci-dessous, le cladogramme des Cryptoclididae basé d'après Roberts et al. (2020)[5] :

 Cryptoclididae 



Plesiosaurus manselii (synonyme de Colymbosaurus trochanterius)



Pantosaurus





Abyssosaurus



Colymbosaurus







Tricleidus




Picrocleidus



Muraenosaurus







Cryptoclidus




Kimmerosaurus



Tatenectes






Djupedalia




Spitrasaurus



Ophthalmothule








Bibliographie

Document utilisé pour la rédaction de l’article : document utilisé comme source pour la rédaction de cet article.

  • [2010] (en) Hilary F. Ketchum et Roger B J Benson, « Global interrelationships of Plesiosauria (Reptilia, Sauropterygia) and the pivotal role of taxon sampling in determining the outcome of phylogenetic analyses », Biological Reviews, Wiley, vol. 85, no 2,‎ , p. 361-392 (ISSN 1464-7931, PMID 20002391, DOI 10.1111/J.1469-185X.2009.00107.X). Ouvrage utilisé pour la rédaction de l'article.Voir et modifier les données sur Wikidata

Publication originale

  • [1981] (en) D. S. Brown, « The English Upper Jurassic Plesiosauroidea (Reptilia) and a review of the phylogeny and classification of the Plesiosauria », Bulletin of the British Museum (Natural History). Geology, Londres, Inconnu, vol. 35,‎ , p. 253-347 (ISSN 0007-1471, OCLC 1537337, lire en ligne). Ouvrage utilisé pour la rédaction de l'article.Voir et modifier les données sur Wikidata

Voir aussi

Liens externes

Sur les autres projets Wikimedia :

Notes et références

Références taxonomiques

Références

  1. D. S. Brown 1981, p. 253-347.
  2. a b c et d (en) Référence Paleobiology Database : Kimmerosaurus Brown, 1981 (plesiosaur) (consulté le ).
  3. (en) Référence Paleobiology Database : Kimmerosaurus langhami Brown, 1981 (plesiosaur) (consulté le ).
  4. Brown 1981, p. 300-314
  5. (en) Aubrey J. Roberts, Patrick S. Druckenmiller, Benoit Cordonnier, Lene L. Delsett et J. H. Hurum, « A new plesiosaurian from the Jurassic–Cretaceous transitional interval of the Slottsmøya Member (Volgian), with insights into the cranial anatomy of cryptoclidids using computed tomography », PeerJ, vol. 8,‎ , e8652 (PMID 32266112, PMCID 7120097, DOI 10.7717/peerj.8652 Accès libre)

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