Dynamoterror
From Greek dynamis (power) + Latin terror (terror): 'powerful terror'.
Dynamoterror is a monospecific genus of tyrannosaurid dinosaur from New Mexico that lived during the Late Cretaceous (lower Campanian age, 78 Ma) in what is now the upper Allison Member of the Menefee Formation. The type and only species, Dynamoterror dynastes, is known from a subadult or adult individual about 9 meters (30 feet) long with an incomplete associated skeleton. It was named in 2018 by Andrew T. McDonald, Douglas G. Wolfe and Alton C. Dooley, Jr. Dynamoterror was closely related to Teratophoneus and Lythronax.
Diagnosis
- Prefrontonasal and prefrontolacrimal processes in close proximity on the frontal, separated only by a shallow notch (unambiguous autapomorphy).
- Caudal part of the postorbital suture subrectangular, concave, and laterally projecting, separated from the rostral part by a deep groove (provisional autapomorphy).
Species
Dynamoterror dynastes McDonald et al., 2018
Type species
From Latin 'dynastes' meaning 'ruler', honoring the junior synonym 'Dynamosaurus imperiosus' which was a childhood favorite of one of the authors.
- Holotype
- UMNH VP 28348 , Utah Museum of Natural History
- Material
- Incomplete associated skeleton: left and right frontals, four fragmentary vertebral centra, dorsal rib fragments, right metacarpal II, supraacetabular crest of right ilium, unidentifiable long bone fragments, phalanges 2 and 4 of left pedal digit IV.
- Horizon
- upper Juans Lake Bed, Allison Member, Menefee Formation, Campanian, Late Cretaceous , 83.6–72.2 million years ago
- Locality
- New Mexico, United States
References
- McDonald, A. T.; Wolfe, D. G.; Dooley, A. C. (2018). A new tyrannosaurid (Dinosauria: Theropoda) from the Upper Cretaceous Menefee Formation of New Mexico. PeerJ 6: e5749. PeerJ. doi:10.7717/peerj.5749 mcdonald2018b