[D] Sonorasaurus thompsoni [sG] [T]
Cretaceous Early Cretaceous Late Albian Cenomanian
Saurischia Sauropodomorpha Sauropoda Brachiosauridae
Turney Ranch Formation, Arizona, US
Genus - Typespecies
Sonorasaurus thompsoni (Ratkevich, 1998) >> Chihuahuasaurus (Ratkevich vide [Anonymus] 1997)
The specimen which was initially taken to be a large, early hadrosaur is a brachiosaurid and is a new taxon within the Brachiosauridae. The specimen consists mainly of limb and pelvic elements associated with caudal and dorsalvertebrae, ribs, andgastroliths...a middle Cretaceous brachiosaurid!
A new Cretaceous Brachiosaurid Dinosaur from Southern Arizona Abstract from the formal description of Sonorasaurus thompsoni published in The Journal of the Arizona- Nevada Academy of Science, Volume 31 (1) 1998 by Ron Ratkevich Project director: Ronald P. Ratkevich, Dept. Of Paleontology, Arizona-Sonora Desert Museum Geologist: Robert Scarborough, Staff Geologist, Arizona-Sonora Desert Museum Remains of a new species of brachiosaurid sauropod dinosaur tentatively given the name \\\"Sonorasaurus thompsoni\\\"
S. thompsoni is apparently morphologically identical to Brachiosaurus (Curtice, 2000)