Metriorhynchoidea

Metriorhynchoidea Temporal range: Middle Jurassic-Early Cretaceous, 173–135 Ma PreЄ Є O S D C P T J K Pg N
Restoration of Teleidosaurus calvadosii
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Superorder:	Crocodylomorpha
Clade:	Neosuchia
Suborder:	†Thalattosuchia
Superfamily:	†Metriorhynchoidea Fitzinger, 1843
Subgroups
See text.

Metriorhynchoidea is an extinct superfamily of thalattosuchian crocodyliforms from the early Middle Jurassic to the Early Cretaceous (Aalenian - Valanginian) of Europe, North America and South America. Metriorhynchids are fully aquatic crocodyliforms.^[1][2] Named by Fitzinger, in 1843, it contains the basal taxa like Teleidosaurus and Eoneustes and the family Metriorhynchidae. Two unnamed taxa are also known, from Oregon and Chile.^[3]

Phylogeny

Metriorhynchoidea is a stem-based taxon defined in 2009 as the most inclusive clade consisting of Metriorhynchus geoffroyii, but not Teleosaurus cadomensis.^[3] The cladogram below follows the topology from a 2011 analysis by Andrea Cau and Federico Fanti.^[1] Note that the same topology was obtained in Mark T. Young and Marco Brandalise de Andrade, 2009 and Mark T. Young, Stephen L. Brusatte, Marcello Ruta and Marco Brandalise de Andrade, 2010.^[3][2]

Metriorhynchoidea	Teleidosaurus calvadosii Eoneustes bathonicus Eoneustes gaudryi Metriorhynchoidea indet. Oregon crocodile  Metriorhynchidae  Geosaurinae Metriorhynchinae

References

1. Andrea Cau; Federico Fanti (2011). "The oldest known metriorhynchid crocodylian from the Middle Jurassic of North-eastern Italy: Neptunidraco ammoniticus gen. et sp. nov". Gondwana Research 19 (2): 550–565. doi:10.1016/j.gr.2010.07.007.
2. Mark T. Young, Stephen L. Brusatte, Marcello Ruta and Marco Brandalise de Andrade (2010). "The evolution of Metriorhynchoidea (Mesoeucrocodylia, Thalattosuchia): an integrated approach using geometrics morphometrics, analysis of disparity and biomechanics". Zoological Journal of the Linnean Society 158 (4): 801–859. doi:10.1111/j.1096-3642.2009.00571.x.
3. Mark T. Young and Marco Brandalise de Andrade (2009). "What is Geosaurus? Redescription of Geosaurus giganteus (Thalattosuchia: Metriorhynchidae) from the Upper Jurassic of Bayern, Germany". Zoological Journal of the Linnean Society 157 (3): 551–585. doi:10.1111/j.1096-3642.2009.00536.x.