A 95 million-year-old fossilized jaw discovered in Texas has been identified as a new genus and species of flying reptile, Aetodactylus halli.
Aetodactylus halli is a pterosaur, a group of flying reptiles commonly referred to as pterodactyls. The rare pterosaur – literally a winged lizard – is also one of the youngest members in the world of the pterosaur family Ornithocheiridae, according to paleontologist Timothy Myers, who identified and named the creature.
The newly identified reptile is only the second ornithocheirid ever documented in North America, Myers says. He is a postdoctoral fellow in the Roy M. Huffington Department of Earth Sciences in SMU’s Dedman College.
Aetodactylus halli would have soared over what is now the Dallas-Fort Worth area during the Cretaceous Period when much of the Lone Star state was under water, covered by a vast ancient sea.
While rare in North America, toothed pterosaurs belonging to the Ornithocheiridae are a major component of Cretaceous pterosaur faunas elsewhere in the world, Myers says. The Texas specimen (right) – a nearly complete mandible with most of its 54 teeth missing – is definitively younger than most other ornithocheirid specimens from Brazil, England and China, he says. It is five million years younger than the only other known North American ornithocheirid.
Myers describes the new species in the latest issue of the Journal of Vertebrate Paleontology. He named the pterosaur Aetodactylus halli after Lance Hall, a member of the Dallas Paleontological Society who hunts fossils for a hobby. Hall found the specimen in 2006, embedded in a soft, powdery shale exposed by excavation of a hillside next to a highway near Mansfield. He donated the specimen to SMU.
Myers’ article in the Journal of Vertebrate Paleontology is titled “A new ornithocheirid pterosaur from the Upper Cretaceous (Cenomanian-Turonian) Eagle Ford Group of Texas.”
Written by Margaret Allen