Polycotylidae

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Trinacromerum bentonianum ex Cretaceo exeunte Kansiae

Classis : Reptilia 
Ordo : Plesiosauria 
Subordo : Plesiosauroidea 
Familia : Polycotylidae 
Williston, 1909

Polycotylidae sunt familiae Plesiosauriorum ex Aevo Cretaceo, sororius Leptocleididarum grex.

Haec reptilia, quod eis erant colla brevia et magna capita elongata, Pliosauriorum similia erant, sed accuratiores investigationes phylogeneticae ea docent multas proprietates habuisse quas etiam Plesiosauridis Elasmosauridisque erant.

Fossilia per orbem terrarum inveniuntur, speciminibus ex Nova Zelandia, Australia, Iaponia, Maroco, Civitatibus Foederatis, Canada, obsoletis Unionis Rerum Publicarum Sovieticarum Socialisticarum civitatibus, et America Australi iam relatis.[1] Anno 2010, genus Thililua ad Leptocleididas translata est.[2]

Phylogenia[recensere | fontem recensere]

Cladogramma secundum Albright, Gillette, et Titus (2007).[3]

Plesiosauria 

Plesiosaurus



Tricleidus


 Polycotylidae 

Edgarosaurus




Thililua



 Palmulainae 

UMUT MV 19965 (ex Iaponia)



Pahasapasaurus (=AMM 98.1.1)[4]



Palmulasaurus



 Polycotylinae 

Dolichorhynchops




Trinacromerum




Eopolycotylus



Polycotylus









Cladogramma secundum Ketchum et Benson (2010).[2]

Plesiosauroidea 

Cryptoclididae


 Leptocleidia 

Leptocleididae


 Polycotylidae 

Plesiopleurodon




Edgarosaurus




QM F18041




Eopolycotylus




Trinacromerum




"D. herschelensis"




Dolichorhynchops



Manemergus



Palmulasaurus











Notae[recensere | fontem recensere]

  1. Patrick S. Druckenmiller et Anthony P. Russell (2009). "Earliest North American Occurrence Of Polycotylidae (Sauropterygia: Plesiosauria) From The Lower Cretaceous (Albian) Clearwater Formation, Alberta, Canada". Journal of Paleontology 83 (6): 361–392 
  2. 2.0 2.1 H. F. Ketchum et R. B. J. Benson, (2010). "Global interrelationships of Plesiosauria (Reptilia, Sauropterygia) and the pivotal role of taxon sampling in determining the outcome of phylogenetic analyses". Biological Reviews 85: 361–392 
  3. L. B. Albright III, D. D. Gillette, et A. L. Titus, 2007b. Plesiosaurs from the Upper Cretaceous (Cenomanian-Turonian) Tropic Shale of southern Utah, part 2: polycotylidae. Journal of Vertebrate Paleontology 27(1): 41–58.
  4. Schumacher, B. A., 2007, A new polycotylid plesiosaur (Reptilia; Sauropterygia) from the Greenhorn Limestone (Upper Cretaceous; lower upper Cenomanian), Black Hills, South Dakota: In: The Geology and Paleontology of the Late Cretaceous marine deposits of the Dakotas, edited by Martin, J. E., and Parris, D. C., The Geological Society of America, Special Paper 427, p. 133-146.

Nexus externi[recensere | fontem recensere]

Avis Haec stipula ad reptile spectat. Amplifica, si potes!