Paper No. 9
Presentation Time: 8:00 AM-5:30 PM
COELURID REMAINS FROM THE AARON SCOTT QUARRY (MORRISON FORMATION, JURASSIC PERIOD) OF CENTRAL UTAH
This is a description and identification of assorted materials belonging to an unidentified genus of Coelurid excavated at the Aaron Scott Site near Ferron, Utah. It includes a comparison to known Coelurid genera, such as Coelurus. This particular genera possesses lengthy cervical vertebrae all of which are linked together by prominent articular processes. The first few have slightly convex front articular faces on the centrum, while middle cervicals are biconcave, and the final cervical is deeply concave. The rest of the vertebrae are also biconcave in the same manner as the middle cervical vertebrae, with the caudal vertebrae lacking chevrons. Coelurus’ neural spines were elevated and compressed, and it had a very defined suture in its neural arch. The creature's phalanges were roughly 25 mm long and around 14 mm in diameter at the base.