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Dynamoterror dynastes
Taxonomy
Dynamoterror dynastes was named by McDonald et al. (2018). Its type specimen is UMNH VP 28348, a partial skeleton (L & R frontals, 4 fragmentary vertebral centra, fragments of dorsal ribs, R metacarpal II, supraacetabular crest of R ilium, unidentifiable fragments of long bo), and it is a 3D body fossil. Its type locality is Dynamoterror type locality [UMNH] (PROXY), which is in a Campanian/Campanian terrestrial horizon in the Menefee Formation of New Mexico. It is the type species of Dynamoterror.
Synonymy list
| Year | Name and author |
|---|---|
| 2018 | Dynamoterror dynastes McDonald et al. p. 3 |
| 2021 | Dynamoterror dynastes McDonald et al. p. 2 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Dynamoterror dynastes McDonald et al. 2018
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. T. McDonald et al. 2018 | tyrannosaurine tyrannosaurid distinguished by two autapomorphies on the frontals: (1) prefrontonasal and prefrontolacrimal processes are in close proximity, separated only by a shallow notch;and (2) subrectangular, concave, laterally projecting caudal part of the postorbital suture,separated from the rostral part by a deep groove. The second autapomorphy should be treated as provisional, given the ontogenetic variation observed in this region of the frontal in other tyrannosaurids (Carr & Williamson, 2004) (see description of the lateral surface of the frontal below). In the context of the phylogenetic analysis of Carr et al. (2017), which is used herein, UMNH VP 28348 exhibits a feature that supports its affinities among derived tyrannosauroids (1561,“frontal, dorsotemporal fossa, medial extension, dorsal view: meets opposing fossa at the midline”; also present inTimurlengia euotica, Xiongguanlong baimoensis, B. sealeyi, and Tyrannosauridae), and a feature identified by Carr et al. (2017)as an unambiguous synapomorphy of “derived tyrannosaurines” (1571,“frontal, sagittal crest, form, dorsal and lateral views: present and pronounced (dorsoventrally tall), single structure”). |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| References: Benton 1983, Marsh 1875 | |||||
Age range: base of the Early/Lower Campanian to the top of the Middle Campanian or 83.50000 to 70.60000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Campanian - Middle Campanian | USA (New Mexico) | Dynamoterror dynastes (type locality: 219263) |