Project 4332: A. D. Marsh, A. R. Milner, J. D. Harris, D. D. De BLIEUX, J. I. Kirkland. 2021. A non-averostran neotheropod vertebra (Dinosauria: Theropoda) from the earliest Jurassic Whitmore Point Member (Moenave Formation) in southwestern Utah. Journal of Vertebrate Paleontology. 41 (1):e1897604 .
Abstract
Theropod dinosaurs are minor components of Late Triassic ecosystems in North America, comprising coelophysoids and various non-neotheropods from the Chinle Formation of Arizona, Utah, Colorado, and New Mexico and the Dockum Group of western Texas. By the Sinemurian (Early Jurassic), the coelophysoid “Syntarsus” kayentakatae and the large-bodied non-averostran neotheropod Dilophosaurus wetherilli from the Kayenta Formation were the dominant terrestrial predators. Theropods are virtually unknown from the intervening Rhaetian–Hettangian Moenave Formation, with the exception of two partial coelophysoid pelves from somewhere within the Dinosaur Canyon Member, which includes the Triassic–Jurassic boundary and end-Triassic mass extinction. Here we describe an anterior trunk vertebra from a non-coelophysoid, non-averostran neotheropod from the uppermost Whitmore Point Member of the Moenave Formation in southwestern Utah, which is Hettangian in age. The vertebra has prominent vertebral laminae and associated pneumatic fossae, and anterior and posterior ‘shoulders’ on the neural spine that are similar to those found in Dilophosaurus wetherilli. This vertebra belongs to a theropod that may be as many as 15 million years older than Dilophosaurus wetherilli from the middle of the Kayenta Formation in Arizona. This theropod is associated with Grallator, Eubrontes, and Characichnos theropod traces made on the shores of the Early Jurassic Lake Whitmore that are abundant in the Whitmore Point Member in southwestern Utah. Its occurrence in the Hettangian roughly coincides with the appearance of Eubrontes tracks in North America, indicating that not all contemporaneous theropod traces were made by coelophysoids.Read the article »
Article DOI: 10.1080/02724634.2021.1897604
Project DOI: 10.7934/P4332, http://dx.doi.org/10.7934/P4332
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 9925 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 359 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 801 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:2/357 |
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MorphoBank Project 4332
MorphoBank Project 4332
- Creation Date:
21 July 2022 - Publication Date:
19 April 2023 - Project views: 3440
- Matrix downloads: 2
Authors' Institutions
- Petrified Forest National Park, Navajo County
- St. George Dinosaur Discovery Site at Johnson Farm, St. George
- Utah Geological Survey
- Dixie State University
Members
member name | taxa | specimens | media | media notes | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||||||||||
Brooke Long-Fox Project Administrator | 47 | 1 | 1 | 1 | 359 | 0 | 359 | 0 | 0 | 9925 (9925, 0, 0) | 0 | 0 | 0 | 0 | 0 | ||||||||
Katherine Walton Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M29256' (47 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Erythrosuchus africanus Last Modified in 04/19/23 | 43 | 316 | 316 | 0 | 0 | 0 | 0 | 2 |
[2] † Euparkeria capensis Last Modified in 04/19/23 | 20 | 340 | 339 | 0 | 0 | 0 | 0 | 2 |
[3] † Revueltosaurus callenderi Last Modified in 04/19/23 | 48 | 311 | 311 | 0 | 0 | 0 | 0 | 2 |
[4] † Aetosaurus ferratus Last Modified in 04/19/23 | 125 | 235 | 234 | 0 | 0 | 0 | 0 | 2 |
[5] † Arizonasaurus babbitti Last Modified in 04/19/23 | 157 | 202 | 202 | 0 | 0 | 0 | 0 | 2 |
[6] † Effigia okeeffeae Last Modified in 04/19/23 | 89 | 270 | 270 | 0 | 0 | 0 | 0 | 2 |
[7] † Batrachotomus kuperferzellensis Last Modified in 04/19/23 | 57 | 302 | 302 | 0 | 0 | 0 | 0 | 2 |
[8] † Postosuchus kirkpatricki Last Modified in 04/19/23 | 62 | 297 | 297 | 0 | 0 | 0 | 0 | 2 |
[9] † Dromicosuchus grallator Last Modified in 04/19/23 | 123 | 236 | 236 | 0 | 0 | 0 | 0 | 2 |
[10] † Eudimorphodon ranzii Last Modified in 04/19/23 | 183 | 176 | 176 | 0 | 0 | 0 | 0 | 2 |
[11] † Dimorphodon macronyx Last Modified in 04/19/23 | 162 | 197 | 197 | 0 | 0 | 0 | 0 | 2 |
[12] † Lagerpeton chanarensis Last Modified in 04/19/23 | 219 | 140 | 140 | 0 | 0 | 0 | 0 | 2 |
[13] † Dromomeron romeri Last Modified in 04/19/23 | 288 | 71 | 71 | 0 | 0 | 0 | 0 | 2 |
[14] † Dromomeron gregorii Last Modified in 04/19/23 | 311 | 48 | 48 | 0 | 0 | 0 | 0 | 2 |
[15] † Marasuchus lilloensis Last Modified in 04/19/23 | 163 | 197 | 196 | 0 | 0 | 0 | 0 | 2 |
[16] † Eucoelophysis baldwini Last Modified in 04/19/23 | 330 | 29 | 29 | 0 | 0 | 0 | 0 | 2 |
[17] † Sacisaurus agudoensis Last Modified in 04/19/23 | 259 | 102 | 100 | 0 | 0 | 0 | 0 | 2 |
[18] † Silesaurus opolensis Last Modified in 04/19/23 | 60 | 300 | 299 | 0 | 0 | 0 | 0 | 2 |
[19] † Eocursor parvus Last Modified in 04/19/23 | 225 | 134 | 134 | 0 | 0 | 0 | 0 | 2 |
[20] † Pisanosaurus mertii Last Modified in 04/19/23 | 262 | 97 | 97 | 0 | 0 | 0 | 0 | 2 |
[21] † Heterodontosaurus tucki Last Modified in 04/19/23 | 63 | 298 | 296 | 0 | 0 | 0 | 0 | 2 |
[22] † Lesothosaurus dianosticus Last Modified in 04/19/23 | 73 | 286 | 286 | 0 | 0 | 0 | 0 | 2 |
[23] † Scutellosaurus lawleri Last Modified in 04/19/23 | 179 | 181 | 180 | 0 | 0 | 0 | 0 | 2 |
[24] † Saturnalia tupiniquim Last Modified in 04/19/23 | 159 | 204 | 200 | 0 | 0 | 0 | 0 | 2 |
[25] † Plateosaurus engelhardti Last Modified in 04/19/23 | 19 | 341 | 340 | 0 | 0 | 0 | 0 | 2 |
[26] † Efraasia minor Last Modified in 04/19/23 | 67 | 292 | 292 | 0 | 0 | 0 | 0 | 2 |
[27] † Herrerasaurus ischigualastensis Last Modified in 04/19/23 | 42 | 318 | 317 | 0 | 0 | 0 | 0 | 2 |
[28] † Staurikosaurus pricei Last Modified in 04/19/23 | 224 | 135 | 135 | 0 | 0 | 0 | 0 | 2 |
[29] † Chindesaurus bryansmalli Last Modified in 04/19/23 | 271 | 89 | 88 | 0 | 0 | 0 | 0 | 2 |
[30] † Eoraptor lunensis Last Modified in 04/19/23 | 95 | 265 | 264 | 0 | 0 | 0 | 0 | 2 |
[31] † Tawa hallae Last Modified in 04/19/23 | 48 | 311 | 311 | 0 | 0 | 0 | 0 | 2 |
[32] † Coelophysis bauri Last Modified in 04/19/23 | 27 | 334 | 332 | 0 | 0 | 0 | 0 | 2 |
[33] † Syntarsus kayentakatae Last Modified in 04/19/23 | 97 | 262 | 262 | 0 | 0 | 0 | 0 | 2 |
[34] † Liliensternus liliensterni Last Modified in 04/19/23 | 149 | 212 | 210 | 0 | 0 | 0 | 0 | 2 |
[35] † Zupaysaurus rougieri Last Modified in 04/19/23 | 245 | 114 | 114 | 0 | 0 | 0 | 0 | 2 |
[36] † Cryolophosaurus ellioti Last Modified in 04/19/23 | 216 | 143 | 143 | 0 | 0 | 0 | 0 | 2 |
[37] † Ceratosaurus nasicornis Last Modified in 04/19/23 | 74 | 285 | 285 | 0 | 0 | 0 | 0 | 2 |
[38] † Piatnitzkysaurus floresi Last Modified in 04/19/23 | 178 | 181 | 181 | 0 | 0 | 0 | 0 | 2 |
[39] † Allosaurus fragilis Last Modified in 04/19/23 | 21 | 338 | 338 | 0 | 0 | 0 | 0 | 2 |
[40] † Velociraptor mongoliensis Last Modified in 04/19/23 | 64 | 295 | 295 | 0 | 0 | 0 | 0 | 2 |
[41] † Camposaurus arizonensis Last Modified in 04/19/23 | 330 | 29 | 29 | 0 | 0 | 0 | 0 | 2 |
[42] † Coelophysis rhodesiensis Last Modified in 04/19/23 | 26 | 333 | 333 | 0 | 0 | 0 | 0 | 2 |
[43] † Lepidus praecisio Last Modified in 04/19/23 | 309 | 51 | 50 | 0 | 0 | 0 | 0 | 2 |
[44] † Eodromaeus murphi Last Modified in 04/19/23 | 135 | 230 | 224 | 0 | 0 | 0 | 0 | 2 |
[45] UCMP 37302 Last Modified in 04/19/23 | 87 | 275 | 272 | 0 | 0 | 0 | 0 | 2 |
[46] UCMP 37303 Last Modified in 04/19/23 | 242 | 118 | 117 | 0 | 0 | 0 | 0 | 2 |
[47] SGDS 768 Last Modified in 04/19/23 | 354 | 5 | 5 | 0 | 0 | 0 | 0 | 2 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 3440 | |
Project overview | 347 | |
Matrix views | 166 | Matrix landing page (159 views); Matrix (7 views); |
Documents list | 151 | |
Media views | 653 | Media search (560 views); M861568 (93 views); |
Bibliography | 127 | |
Views for media list | 191 | |
Specimen list | 328 | |
Taxon list | 1477 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 5 | |
Matrix downloads | 2 | Matrix (2 downloads); |
Project downloads | 2 | |
Document downloads | 1 | Matrix from Marsh and Rowe 2020 (1 download); |