Pholidosauridae

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Pholidosaurids
Temporal range: Middle Jurassic - Late Cretaceous, 167.7–89.3 Ma
Pholidosaurus meyeri fossil at the Museum für Naturkunde, Berlin
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Archosauria
Clade: Pseudosuchia
Clade: Crocodylomorpha
Clade: Crocodyliformes
Suborder: Tethysuchia
Family: Pholidosauridae
Zittel and Eastman, 1902
Subgroups

See text.

Pholidosaurus purbeckensis fossil.

Pholidosauridae is an extinct family of aquatic neosuchian mesoeucrocodylian crocodylomorphs. Fossils have been found in Europe (Denmark, England, France, Germany, Spain and Sweden), Africa (Algeria, Niger, Mali, Morocco and Tunisia), North America (Canada and the United States) and South America (Brazil and Uruguay). The pholidosaurids first appeared in the fossil record during the Bathonian stage of the Middle Jurassic and became extinct during the Late Turonian stage of the Late Cretaceous.[1]

Sarcosuchus is one of the best known pholidosaurs. It is believed to have attained lengths of up to 12 meters and weighed up to 8 tonnes. One genus, Suchosaurus, once thought to be a pholidosaur,[2] has since been shown to be a spinosaurid theropod dinosaur.[3]

Phylogeny

Pholidosauridae is usually considered to be most closely related to the Dyrosauridae. However, the relationship between these families is not fully understood. Pholidosauridae might be monophyletic,[1] paraphyletic[4] or even a polyphyletic[5] in relation to Dyrosauridae. For example, Fortier, Perea & Schultz (2011) found the family to be monophyletic, and include to main lineages: the ElosuchusMeridiosaurus lineage and the Pholidosaurus lineage. The cladogram below shows their phylogenetic analysis, which is based on an expanded version of Pol and Gasparini (2009) analysis.[1]

Neosuchia

de Andrade et al. (2011) recovered a paraphyletic traditional Pholidosauridae. In their analysis the "Elosuchus lineage" was found to be basal to the "Pholidosaurus lineage"+Dyrosauridae. They used the name Elosuchidae for the Elosuchus lineage and restricted Pholidosauridae to its type genus. The following cladogram simplified after their analysis.[4]

References

  1. ^ a b c Daniel Fortier, Daniel Perea; Cesar Schultz (2011). "Redescription and phylogenetic relationships of Meridiosaurus vallisparadisi, a pholidosaurid from the Late Jurassic of Uruguay". Zoological Journal of the Linnean Society. 163 (s1): S66–S108. doi:10.1111/j.1096-3642.2011.00709.x. {{cite journal}}: Unknown parameter |lastauthoramp= ignored (|name-list-style= suggested) (help)
  2. ^ Carroll, R.L. 1988. Vertebrate Paleontology and Evolution. WH Freeman and Company, New York ISBN 0-7167-1822-7
  3. ^ Buffetaut, E. (2007). "The spinosaurid dinosaur Baryonyx (Saurischia, Theropoda) in the Early Cretaceous of Portugal." Geological Magazine, 144(6): 1021-1025.
  4. ^ a b Marco Brandalise de Andrade, Richard Edmonds, Michael J. Benton and Remmert Schouten (2011). "A new Berriasian species of Goniopholis (Mesoeucrocodylia, Neosuchia) from England, and a review of the genus". Zoological Journal of the Linnean Society. 163 (s1): S66–S108. doi:10.1111/j.1096-3642.2011.00709.x.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  5. ^ Bronzati, M.; Montefeltro, F. C.; Langer, M. C. (2012). "A species-level supertree of Crocodyliformes". Historical Biology: 1. doi:10.1080/08912963.2012.662680.

External links