Dynamoterror

Dynamoterror (meaning "powerful terror") 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 metres (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.

==Discovery== thumb|left|Menefee Formation in Colorado. In August 2012, a partial skeleton of a tyrannosaurid was discovered and collected from the Lower Campanian Allison Member of the Menefee Formation in the San Juan Basin of northwestern New Mexico. The remains were found by geology students Brian Watkins and Eric Gutiérrez on an expedition led by Andrew McDonald of the Western Science Center, and Douglas Wolfe, the CEO of the Zuni Dinosaur Institute for Geosciences. Subsequent expeditions at the Menefee Formation in 2013 and 2018 did not reveal any additional elements. The specimen was subsequently named and described in 2018 by Andrew T. McDonald, Douglas G. Wolfe, and Alton C. Dooley, Jr. The holotype specimen, UMNH VP 28348, consists of the left and right frontals, fragmentary vertebral centra, fragments of dorsal ribs, right metacarpal II, the supraacetabular crest of the right ilium, phalanx 2 of left pedal digit IV, phalanx 4 of left pedal digit IV, and other unidentifiable bone fragments. The holotype specimen is currently housed at the Natural History Museum of Utah in Salt Lake City, Utah.