[D] Mymoorapelta maysi [sG] [T]
Kirkland & Carpenter, 1994
Jurassic Late Kimmeridgian
Ornithischia Thyreophora Eurypoda Ankylosauria Polacanthidae
Morrison Formation, Mygatt-Moore Quarry, Colorado, US
Genus - Typespecies
Named after the Mygatt-Moore Quarry.
Mymoorapelta maysi n. gen. n. sp. and is represented by scattered elements thought to pertain to a single individual, including the holotype ilium, four dorsal vertebrae, seven caudal vertebrae, several ribs, ulna, metacarpal, phalanx, pedal ungual, and numerous elements of the armor from throughout the body.
Myrmoorapelta is apparently most closely related to Polacanthus as it also has grooved cervical spines, asymmetric hollow-based triangular caudal plates, and a sacral shield of fused armor.
The taxon differs from Polacanthus and all other described ankylosaurs in being less derived in many aspects of its postcranial skeleton.