Convolosaurus (/ˌkɒnvələˈsɔːrəs/, meaning "flocking lizard" after the concentration of juvenile fossils found) is a genus of basal ornithopod dinosaur from the Twin Mountains Formation from Proctor Lake in Comanche County, Texas.

[1] In May 1985, James "Rusty" Branch at the Proctor Lake in Comanche County, Texas, discovered a dinosaur fossil site which was among the richest from the Lower Cretaceous of North America.

In 2019, the type species Convolosaurus marri was named and described by Kate A. Andrzejewski, Dale A. Winkler and Louis Leo Jacobs.

The generic name is derived from the Latin convolare, "to flock", a reference to the dense concentration of fossils.

The specific name honours Dr. Ray H. Marr who has propagated the Society of Vertebrate Paleontology at the SMU.

[1]While initially considered a member of the Hypsilophodontidae, Convolosaurus was in 2019 placed in the Ornithopoda in a basal position, between Hypsilophodon and Thescelosaurus in the evolutionary tree.

[1] Pisanosaurus Eocursor Heterodontosauridae Lesothosaurus Thyreophora Agilisaurus Hexinlusaurus Othnielosaurus Marginocephalia Zephyrosaurus Orodromeus Haya Jeholosaurus Changchunsaurus Hypsilophodon Convolosaurus Thescelosaurus Talenkauen Parksosaurus Gasparinisaura Rhabdodontidae Ankylopollexia Dryosauridae Tenontosaurus