From Wikipedia, the free encyclopedia
  (Redirected from Metriorhynchine)
Jump to: navigation, search
Temporal range: Callovian–Valanginian
Metriorhynchus jaekeli.jpg
Metriorhynchus superciliosus skeleton, Senckenberg Museum of Frankfurt
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Suborder: Thalattosuchia
Family: Metriorhynchidae
Subfamily: Metriorhynchinae
Fitzinger, 1843

Metriorhynchinae is a subfamily of metriorhynchid crocodyliforms from the late Middle Jurassic to the Early Cretaceous (Callovian - Valanginian) of Europe, North America and South America.[1][2] Named by Fitzinger, in 1843, it contains the metriorhynchids Metriorhynchus, Gracilineustes, Cricosaurus, Maledictosuchus and Rhacheosaurus. The last three taxa form a tribe within Metriorhynchinae, the Rhacheosaurini. Metriorhynchinae is one of two subfamilies of Metriorhynchidae, the other being Geosaurinae.[3]


Metriorhynchinae is a stem-based taxon defined in 2009 as the most inclusive clade consisting of Metriorhynchus geoffroyii, but not Geosaurus giganteus.[4] Rhacheosaurini is a stem-based taxon and it was named and defined by Mark T. Young, Mark A. Bell and Stephen L. Brusatte in 2011 as the most inclusive clade including Rhacheosaurus gracilis, but not Metriorhynchus geoffroyii and Gracilineustes leedsi.[3] The cladogram below follows the topology from a 2010 analysis by Mark T. Young, Stephen L. Brusatte, Marcello Ruta and Marco Brandalise de Andrade with clade names from Young et al. 2011.[3][2]


Metriorhynchus superciliosus

Metriorhynchus geoffroyii

Metriorhynchus hastifer

Metriorhynchus sp.

Gracilineustes acutus

Gracilineustes leedsi


Metriorhynchinae indet. (USNM 19640)

Rhacheosaurus gracilis

Cricosaurus sp.

Cricosaurus suevicus

Cricosaurus elegans

Cricosaurus saltillense

Cricosaurus vignaudi

Cricosaurus gracilis

Cricosaurus araucanensis

Cricosaurus schroederi

Cricosaurus macrospondylus


  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/ 
  2. ^ a b 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. ^ a b c Mark T. Young, Mark A. Bell and Stephen L. Brusatte (2011). "Craniofacial form and function in Metriorhynchidae (Crocodylomorpha: Thalattosuchia): modelling phenotypic evolution with maximum-likelihood methods". Biology Letters. 7 (6): 913–916. doi:10.1098/rsbl.2011.0357. PMC 3210659Freely accessible. PMID 21543396. 
  4. ^ 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.