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Leptocleididae

De Wikipedia, la enciclopedia libre

 
Leptocleididae
Rango temporal: Cretácico Inferior, Berriasiense-Albiense

Taxonomía
Reino: Animalia
Subreino: Eumetazoa
(sin rango) Bilateria
Superfilo: Deuterostomia
Filo: Chordata
Subfilo: Vertebrata
Clase: Sauropsida
Superorden: Sauropterygia
Orden: Plesiosauria
Suborden: Pliosauroidea
Familia: Leptocleididae
White, 1940
Géneros
[editar datos en Wikidata]

Los leptocléididos (Leptocleididae) son una familia de pequeños plesiosaurios que vivieron durante el período Cretácico Inferior (de principios del Berriasiense a principios del Albiense).[1]​ Leptocleidus y Umoonasaurus tenían cuerpos redondeados y cabezas de forma triangular. Hilary F. Ketchum y Roger B. J. Benson (2010), transfirieron Brancasaurus, Kaiwhekea, Nichollssaura y Thililua a esta familia.[2]​ Sin embargo, Ketchum y Benson (2011) reasignaron a Kaiwhekea y Thililua a sus posiciones originales, como un elasmosáurido y un policotílido, respectivamente.[1]​

Filogenia

Cabeza de Kaiwhekea katiki, alguna vez considerado como un leptocleídido

Cladograma basado en Ketchum y Benson (2010):[2]​

Leptocleididae
 

Kaiwhekea

 
 
 
 

Nichollssaura

 
 

Thililua

 
 
 
 

Brancasaurus

 
 
 

Umoonasaurus

 
Leptocleidus
 

L. capensis

 
 

L. superstes

 
 
 
 
 
 

Cladograma basado en Ketchum y Benson (2011):[1]​

Leptocleididae
 

Nichollssaura

 
 
 

Brancasaurus

 
 
 

Umoonasaurus

 
Leptocleidus
 

L. capensis

 
 

L. superstes

 
 
 
 
 

Referencias

  1. ↑ a b c Hilary F. Ketchum and Roger B. J. Benson (2011). «A new pliosaurid (Sauropterygia, Plesiosauria) from the Oxford Clay Formation (Middle Jurassic, Callovian) of England: evidence for a gracile, longirostrine grade of Early-Middle Jurassic pliosaurids». Special Papers in Palaeontology 86: 109-129. doi:10.1111/j.1475-4983.2011.01083.x. 
  2. ↑ a b Ketchum, H. F., and Benson, R. B. J. (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. PMID 20002391. doi:10.1111/j.1469-185X.2009.00107.x. 
Esta página se editó por última vez el 9 may 2024 a las 03:18.
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