Kingdom Animalia Clade Dinosauria Suborder †Ornithopoda Scientific name Dryosauridae Rank Family | Phylum Chordata Order †Ornithischia Clade †Dryomorpha Higher classification Iguanodontia Lower classifications Dryosaurus, Kangnasaurus | |
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Dryosaurids were primitive iguanodonts. They are known from Middle Jurassic to Early Cretaceous rocks of Africa, Europe, and North America.
PhylogenyEdit
Until recently many dryosaurids have been regarded as dubious (Callovosaurus and Kangnasaurus) or as species of the type member, Dryosaurus (Dysalotosaurus, Elrhazosaurus and Valdosaurus). However, more recent studies redescribe these genera as valid. The cladogram below follows Paul M. Barrett, Richard J. Butler, Richard J. Twitchett and Stephen Hutt (2011).
According to an abstract at the SVP 2014 conference, Anabisetia, Macrogryphosaurus, and Trinisaura, all from the Late Cretaceous of Gondwana, are members of Dryosauridae. If so, then Elasmaria would be a derived clade of Cretaceous dryosaurids.
References
Dryosauridae Wikipedia(Text) CC BY-SA