Cryptoclidia

Cryptoclidia was named and defined as a node clade in 2010 by Hilary Ketchum and Roger Benson: the group consisting of the last common ancestor of Cryptoclidus eurymerus and Polycotylus latipinnis; and all its descendants.[1]

Cryptoclidia
Temporal range: Middle Jurassic-Late Cretaceous, 165–66 Ma
Skeleton of Thililua longicollis, National Museum of Nature and Science
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Superorder: †Sauropterygia
Order: †Plesiosauria
Superfamily: †Plesiosauroidea
Clade: †Cryptoclidia
Ketchum and Benson, 2010
Subgroups

Cryptoclidia is a clade of plesiosaurs.

The following cladogram follows an analysis by Benson & Druckenmiller (2014).[2]

Plesiosauroidea
 

Plesiosaurus

 
 
 

Eretmosaurus

 
 

Westphaliasaurus

 
 

Microcleididae

 
 
 

Plesiopterys

 
Cryptoclidia
 

Cryptoclididae

 
Xenopsaria
 

Elasmosauridae

 
Leptocleidia
 

Leptocleididae

 
 

Polycotylidae

 
 
 
 
 
 
 

References
  1. Ketchum, H.F.; 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 (2): 361–392. doi:10.1111/j.1469-185X.2009.00107.x. PMID 20002391.
  2. Benson, R. B. J.; Druckenmiller, P. S. (2013). "Faunal turnover of marine tetrapods during the Jurassic-Cretaceous transition". Biological Reviews. 89: 1–23. doi:10.1111/brv.12038. PMID 23581455.


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