Project 4447: G. Sobral, H. Sues, R. Schoch. 2021. A new diapsid with a unique tooth structure from the Middle Triassic (Ladinian) of Germany. Journal of Vertebrate Paleontology. 41 (2):null.
Abstract
The Middle Triassic was an important time in the evolutionary history of reptiles because it was during this time that many modern groups originated and initially diversified. In this context, the rich fossiliferous deposits of the Ladinian-age Erfurt Formation in southern Germany play an important role in elucidating reptilian diversity during this interval. Here we present an interesting record of a reptile with an unusual dentition. The material comprises a fragment of a left dentary. The teeth are tightly spaced and have chisel-shaped crowns, with the posterolingually extending apices abutting those of the successive teeth and forming a continuous cutting edge. Micro-computed tomography scanning of the jaw fragment revealed the teeth have expanded roots and sit on an open, shallow groove. The Meckelian canal is partially open lingually and a second canal for the inferior alveolar nerve and artery extends parallel to it. Although the preserved anatomical features of the material are insufficient for precise phylogenetic placement, the structure of the robust dentary and its teeth resembles those of some lepidosaurs and certain early Mesozoic marine diapsids. The distinctive morphology of the teeth, combined with the apparent lack of tooth wear, makes it difficult to assess their functional significance. It is interesting that extinct tetrapods with similar tooth morphologies come from strata representing freshwater and brackish-water paleoenvironments, which may serve as an additional line of evidence for future Morpho-functional assessments.Read the article »
Article DOI: 10.1080/02724634.2021.1929268
Project DOI: 10.7934/P4447, http://dx.doi.org/10.7934/P4447
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 31495 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 349 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 757 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:349/0 |
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MorphoBank Project 4447
MorphoBank Project 4447
- Creation Date:
16 October 2022 - Publication Date:
25 August 2023 - Project views: 2772
- Matrix downloads: 1
Authors' Institutions
- National Museum of Natural History, Smithsonian Institution
- Staatliches Museum fur Naturkunde Stuttgart
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
Bidane Martinez Huerta Project Administrator | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 | ||||
Brooke Long-Fox Full membership | 132 | 1 | 1 | 349 | 0 | 0 | 31495 (28774, 0, 2721) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M29465' (132 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † Protorothyris archeri Last Modified in 08/25/23 | 96 | 242 | 242 | 0 | 11 | 0 | 0 | 2 |
[2] † Protocaptorhinus pricei Last Modified in 08/25/23 | 178 | 161 | 161 | 0 | 10 | 0 | 0 | 2 |
[3] † Captorhinus aguti Last Modified in 08/25/23 | 25 | 309 | 308 | 0 | 16 | 0 | 0 | 2 |
[4] † Labidosaurus hamatus Last Modified in 08/25/23 | 16 | 318 | 318 | 0 | 15 | 0 | 0 | 2 |
[5] † Eunotosaurus africanus Last Modified in 08/25/23 | 100 | 240 | 240 | 0 | 9 | 0 | 0 | 2 |
[6] † Proganochelys queensdedti Last Modified in 08/25/23 | 30 | 302 | 302 | 0 | 17 | 0 | 0 | 2 |
[7] † Odontochelys semitestacea Last Modified in 08/25/23 | 226 | 115 | 115 | 0 | 8 | 0 | 0 | 2 |
[8] † Kayentachelys aprix Last Modified in 08/25/23 | 94 | 211 | 211 | 0 | 44 | 0 | 0 | 2 |
[9] † Petrolacosaurus kansensis Last Modified in 08/25/23 | 80 | 258 | 258 | 0 | 11 | 0 | 0 | 2 |
[10] † Araeoscelis gracilis Last Modified in 08/25/23 | 135 | 204 | 204 | 0 | 10 | 0 | 0 | 2 |
[11] † Araeoscelis casei Last Modified in 08/25/23 | 138 | 203 | 203 | 0 | 8 | 0 | 0 | 2 |
[12] † Claudiosaurus germaini Last Modified in 08/25/23 | 145 | 196 | 196 | 0 | 8 | 0 | 0 | 2 |
[13] † Youngina capensis Last Modified in 08/25/23 | 117 | 227 | 223 | 0 | 9 | 0 | 0 | 2 |
[14] † Hovasaurus boulei Last Modified in 08/25/23 | 173 | 170 | 170 | 0 | 6 | 0 | 0 | 2 |
[15] † Acerosodontosaurus piveteaui Last Modified in 08/25/23 | 225 | 118 | 118 | 0 | 6 | 0 | 0 | 2 |
[16] † Saurosternon bainii Last Modified in 08/25/23 | 279 | 67 | 67 | 0 | 3 | 0 | 0 | 2 |
[17] † Coelurosauravus jaekeli Last Modified in 08/25/23 | 208 | 128 | 128 | 0 | 13 | 0 | 0 | 2 |
[18] † Coelurosauravus elivensis Last Modified in 08/25/23 | 225 | 112 | 112 | 0 | 12 | 0 | 0 | 2 |
[19] † Hupehsuchus nanchangensis Last Modified in 08/25/23 | 176 | 168 | 168 | 0 | 5 | 0 | 0 | 2 |
[20] † Parvinatator wapitiensis Last Modified in 08/25/23 | 259 | 88 | 88 | 0 | 2 | 0 | 0 | 2 |
[21] † Gulosaurus helmi Last Modified in 08/25/23 | 210 | 132 | 132 | 0 | 7 | 0 | 0 | 2 |
[22] † Utatsusaurus hataii Last Modified in 08/25/23 | 169 | 168 | 168 | 0 | 12 | 0 | 0 | 2 |
[23] † Mixosaurus panxianensis Last Modified in 08/25/23 | 118 | 219 | 219 | 0 | 12 | 0 | 0 | 2 |
[24] † Prolacerta broomi Last Modified in 08/25/23 | 35 | 304 | 302 | 0 | 12 | 0 | 0 | 2 |
[25] † Protorosaurus speneri Last Modified in 08/25/23 | 116 | 221 | 221 | 0 | 12 | 0 | 0 | 2 |
[26] † Tanystropheus longobardicus Last Modified in 08/25/23 | 115 | 216 | 215 | 0 | 19 | 0 | 0 | 2 |
[27] † Langobardisaurus pandolfii Last Modified in 08/25/23 | 194 | 135 | 135 | 0 | 20 | 0 | 0 | 2 |
[28] † Megalancosaurus preonensis Last Modified in 08/25/23 | 212 | 127 | 127 | 0 | 10 | 0 | 0 | 2 |
[29] † Macrocnemus fuyuanensis Last Modified in 08/25/23 | 172 | 164 | 164 | 0 | 13 | 0 | 0 | 2 |
[30] † Macrocnemus bassanii Last Modified in 08/25/23 | 130 | 201 | 201 | 0 | 18 | 0 | 0 | 2 |
[31] † Endennasaurus acutirostris Last Modified in 08/25/23 | 175 | 161 | 161 | 0 | 13 | 0 | 0 | 2 |
[32] † Askeptosaurus italicus Last Modified in 08/25/23 | 62 | 271 | 271 | 0 | 16 | 0 | 0 | 2 |
[33] † Xinpusaurus kohi Last Modified in 08/25/23 | 164 | 167 | 166 | 0 | 19 | 0 | 0 | 2 |
[34] † Philydrosaurus proseilus Last Modified in 08/25/23 | 126 | 210 | 210 | 0 | 13 | 0 | 0 | 2 |
[35] † Champsosaurus lindoei Last Modified in 08/25/23 | 89 | 244 | 244 | 0 | 16 | 0 | 0 | 2 |
[36] † Trilophosaurus buettneri Last Modified in 08/25/23 | 59 | 273 | 272 | 0 | 18 | 0 | 0 | 2 |
[37] † Mesosuchus browni Last Modified in 08/25/23 | 47 | 295 | 295 | 0 | 7 | 0 | 0 | 2 |
[38] † Howesia browni Last Modified in 08/25/23 | 214 | 132 | 132 | 0 | 3 | 0 | 0 | 2 |
[39] † Teyumbaita sulcognathus Last Modified in 08/25/23 | 90 | 244 | 244 | 0 | 15 | 0 | 0 | 2 |
[40] † Hyperodapedon huenei Last Modified in 08/25/23 | 66 | 268 | 268 | 0 | 15 | 0 | 0 | 2 |
[41] † Proterosuchus alexanderi Last Modified in 08/25/23 | 85 | 256 | 256 | 0 | 8 | 0 | 0 | 2 |
[42] † Proterosuchus fergusi Last Modified in 08/25/23 | 174 | 168 | 168 | 0 | 7 | 0 | 0 | 2 |
[43] † Euparkeria capensis Last Modified in 08/25/23 | 58 | 284 | 283 | 0 | 8 | 0 | 0 | 2 |
[44] † Erythrosuchus africanus Last Modified in 08/25/23 | 80 | 260 | 260 | 0 | 9 | 0 | 0 | 2 |
[45] † Largocephalosaurus qianensis Last Modified in 08/25/23 | 130 | 204 | 204 | 0 | 15 | 0 | 0 | 2 |
[46] † Sinosaurosphargis yunguiensis Last Modified in 08/25/23 | 165 | 163 | 163 | 0 | 21 | 0 | 0 | 2 |
[47] † Cyamodus hildegardis Last Modified in 08/25/23 | 166 | 173 | 173 | 0 | 10 | 0 | 0 | 2 |
[48] † Placodus gigas Last Modified in 08/25/23 | 22 | 306 | 304 | 0 | 23 | 0 | 0 | 2 |
[49] † Wumengosaurus delicatomandibularis Last Modified in 08/25/23 | 152 | 187 | 187 | 0 | 10 | 0 | 0 | 2 |
[50] † Serpianosaurus mirigioliensis Last Modified in 08/25/23 | 58 | 273 | 272 | 0 | 19 | 0 | 0 | 2 |
[51] † Lariosaurus calcagnii Last Modified in 08/25/23 | 88 | 245 | 245 | 0 | 16 | 0 | 0 | 2 |
[52] † Pistosaurus longaevus Last Modified in 08/25/23 | 172 | 156 | 156 | 0 | 21 | 0 | 0 | 2 |
[53] † Palaegama vielhaueri Last Modified in 08/25/23 | 268 | 76 | 76 | 0 | 5 | 0 | 0 | 2 |
[54] Kuehneosaurus latus Last Modified in 08/25/23 | 130 | 205 | 204 | 0 | 15 | 0 | 0 | 2 |
[55] † Icarosaurus siefkeri Last Modified in 08/25/23 | 215 | 126 | 125 | 0 | 9 | 0 | 0 | 2 |
[56] † Pamelina polonica Last Modified in 08/25/23 | 230 | 111 | 110 | 0 | 9 | 0 | 0 | 2 |
[57] † Megachirella wachtleri Last Modified in 08/25/23 | 170 | 167 | 167 | 0 | 12 | 0 | 0 | 2 |
[58] † Marmoretta oxoniensis Last Modified in 08/25/23 | 260 | 84 | 84 | 0 | 5 | 0 | 0 | 2 |
[59] † Paliguana whitei Last Modified in 08/25/23 | 277 | 70 | 70 | 0 | 2 | 0 | 0 | 2 |
[60] † Sophineta cracoviensis Last Modified in 08/25/23 | 238 | 106 | 106 | 0 | 5 | 0 | 0 | 2 |
[61] † Gephyrosaurus bridensis Last Modified in 08/25/23 | 94 | 242 | 242 | 0 | 13 | 0 | 0 | 2 |
[62] † Diphyodontosaurus avonis Last Modified in 08/24/23 | 175 | 164 | 164 | 0 | 10 | 0 | 0 | 2 |
[63] † Planocephalosaurus robinsonae Last Modified in 08/25/23 | 187 | 148 | 148 | 0 | 14 | 0 | 0 | 2 |
[64] † Homeosaurus maximiliani Last Modified in 08/25/23 | 205 | 132 | 132 | 0 | 12 | 0 | 0 | 2 |
[65] † Clevosaurus hudsoni Last Modified in 08/25/23 | 97 | 236 | 236 | 0 | 16 | 0 | 0 | 2 |
[66] † Palaeopleurosaurus posidoniae Last Modified in 08/25/23 | 91 | 239 | 239 | 0 | 19 | 0 | 0 | 2 |
[67] † Kallimodon pulchellus Last Modified in 08/25/23 | 98 | 235 | 235 | 0 | 16 | 0 | 0 | 2 |
[68] † Priosphenodon avelasi Last Modified in 08/25/23 | 116 | 206 | 206 | 0 | 27 | 0 | 0 | 2 |
[69] Sphenodon punctatus Last Modified in 08/25/23 | 1 | 327 | 325 | 0 | 23 | 0 | 0 | 2 |
[70] Trioceros jacksonii Last Modified in 08/24/23 | 10 | 301 | 301 | 0 | 38 | 0 | 0 | 2 |
[71] Uromastyx aegyptia Last Modified in 08/25/23 | 1 | 327 | 326 | 0 | 22 | 0 | 0 | 2 |
[72] † Priscagama gobiensis Last Modified in 08/25/23 | 120 | 205 | 204 | 0 | 25 | 0 | 0 | 2 |
[73] † Pleurodontagama aenigmatoides Last Modified in 08/25/23 | 207 | 131 | 131 | 0 | 11 | 0 | 0 | 2 |
[74] † Igua minuta Last Modified in 08/25/23 | 252 | 93 | 93 | 0 | 4 | 0 | 0 | 2 |
[75] † Polrussia mongoliensis Last Modified in 08/25/23 | 245 | 96 | 96 | 0 | 8 | 0 | 0 | 2 |
[76] Oplurus cyclurus Last Modified in 08/25/23 | 6 | 323 | 322 | 0 | 21 | 0 | 0 | 2 |
[77] Stenocercus scapularis Last Modified in 08/25/23 | 2 | 328 | 328 | 0 | 19 | 0 | 0 | 2 |
[78] Hoplocercus spinosus Last Modified in 08/25/23 | 2 | 331 | 331 | 0 | 16 | 0 | 0 | 2 |
[79] Pristidactylus scapulatus Last Modified in 08/25/23 | 1 | 333 | 332 | 0 | 16 | 0 | 0 | 2 |
[80] Iguana iguana Last Modified in 08/25/23 | 0 | 334 | 333 | 0 | 16 | 0 | 0 | 2 |
[81] Polychrus marmoratus Last Modified in 08/25/23 | 1 | 333 | 329 | 0 | 19 | 0 | 0 | 2 |
[82] Crotaphytus collaris Last Modified in 08/25/23 | 0 | 331 | 329 | 0 | 20 | 0 | 0 | 2 |
[83] Liolaemus signifer Last Modified in 08/25/23 | 0 | 332 | 330 | 0 | 19 | 0 | 0 | 2 |
[84] Leiocephalus carinatus Last Modified in 08/25/23 | 1 | 335 | 333 | 0 | 15 | 0 | 0 | 2 |
[85] Phrynosoma modestum Last Modified in 08/25/23 | 8 | 315 | 314 | 0 | 27 | 0 | 0 | 2 |
[86] Plestiodon fasciatus Last Modified in 08/25/23 | 2 | 327 | 325 | 0 | 22 | 0 | 0 | 2 |
[87] Mabuya mabouya Last Modified in 08/25/23 | 3 | 326 | 325 | 0 | 21 | 0 | 0 | 2 |
[88] † Slavoia darevskii Last Modified in 08/25/23 | 86 | 255 | 252 | 0 | 11 | 0 | 0 | 2 |
[89] † Globaura venusta Last Modified in 08/25/23 | 131 | 209 | 206 | 0 | 12 | 0 | 0 | 2 |
[90] Cordylus niger Last Modified in 08/25/23 | 4 | 332 | 332 | 0 | 13 | 0 | 0 | 2 |
[91] Broadleysaurus major Last Modified in 08/25/23 | 2 | 335 | 335 | 0 | 12 | 0 | 0 | 2 |
[92] Timon lepidus Last Modified in 08/25/23 | 4 | 329 | 329 | 0 | 16 | 0 | 0 | 2 |
[93] Lacerta viridis Last Modified in 08/25/23 | 4 | 326 | 325 | 0 | 20 | 0 | 0 | 2 |
[94] † Meyasaurus diazromerali Last Modified in 08/25/23 | 154 | 186 | 185 | 0 | 10 | 0 | 0 | 2 |
[95] † Paramacellodus oweni Last Modified in 08/25/23 | 272 | 77 | 77 | 0 | 0 | 0 | 0 | 2 |
[96] † Gobinatus arenosus Last Modified in 08/25/23 | 102 | 237 | 235 | 0 | 12 | 0 | 0 | 2 |
[97] † Gilmoreteius chulsanensis Last Modified in 08/25/23 | 36 | 297 | 294 | 0 | 19 | 0 | 0 | 2 |
[98] Teius teyou Last Modified in 08/25/23 | 0 | 334 | 333 | 0 | 16 | 0 | 0 | 2 |
[99] Petracola ventrimaculatus Last Modified in 08/24/23 | 7 | 322 | 322 | 0 | 20 | 0 | 0 | 2 |
[100] Xantusia vigilis Last Modified in 08/25/23 | 2 | 318 | 317 | 0 | 30 | 0 | 0 | 2 |
[101] † Tepexisaurus tepexii Last Modified in 08/25/23 | 173 | 167 | 167 | 0 | 9 | 0 | 0 | 2 |
[102] † Ardeosaurus brevipes Last Modified in 08/25/23 | 265 | 76 | 76 | 0 | 8 | 0 | 0 | 2 |
[103] † Eichstaettisaurus schroederi Last Modified in 08/25/23 | 164 | 169 | 169 | 0 | 16 | 0 | 0 | 2 |
[104] † Gobekko cretacicus Last Modified in 08/25/23 | 254 | 83 | 83 | 0 | 12 | 0 | 0 | 2 |
[105] Dactylocnemis pacificus Last Modified in 08/25/23 | 11 | 304 | 304 | 0 | 34 | 0 | 0 | 2 |
[106] Gekko gecko Last Modified in 08/25/23 | 2 | 315 | 313 | 0 | 34 | 0 | 0 | 2 |
[107] Coleonyx variegatus Last Modified in 08/25/23 | 7 | 308 | 306 | 0 | 36 | 0 | 0 | 2 |
[108] † Huehuecuetzpalli mixtecus Last Modified in 08/25/23 | 149 | 183 | 183 | 0 | 17 | 0 | 0 | 2 |
[109] † Dalinghosaurus longidigitus Last Modified in 08/25/23 | 207 | 131 | 131 | 0 | 11 | 0 | 0 | 2 |
[110] Xenosaurus grandis Last Modified in 08/25/23 | 0 | 330 | 329 | 0 | 20 | 0 | 0 | 2 |
[111] Pseudopus apodus Last Modified in 08/25/23 | 1 | 290 | 289 | 0 | 59 | 0 | 0 | 2 |
[112] Elgaria multicarinata Last Modified in 08/25/23 | 0 | 335 | 335 | 0 | 14 | 0 | 0 | 2 |
[113] Heloderma suspectum Last Modified in 08/25/23 | 2 | 326 | 325 | 0 | 22 | 0 | 0 | 2 |
[114] Lanthanotus borneensis Last Modified in 08/25/23 | 0 | 325 | 324 | 0 | 25 | 0 | 0 | 2 |
[115] Varanus salvator Last Modified in 08/25/23 | 4 | 328 | 327 | 0 | 18 | 0 | 0 | 2 |
[116] † Aigialosaurus Last Modified in 08/25/23 | 133 | 198 | 197 | 0 | 19 | 0 | 0 | 2 |
[117] † Adriosaurus suessi Last Modified in 08/25/23 | 248 | 96 | 96 | 0 | 5 | 0 | 0 | 2 |
[118] † Pontosaurus Last Modified in 08/25/23 | 126 | 202 | 200 | 0 | 23 | 0 | 0 | 2 |
[119] † Najash rionegrina Last Modified in 08/25/23 | 255 | 54 | 54 | 0 | 40 | 0 | 0 | 2 |
[120] † Dinilysia patagonica Last Modified in 08/25/23 | 64 | 209 | 209 | 0 | 76 | 0 | 0 | 2 |
[121] † Pachyrhachis problematicus Last Modified in 08/25/23 | 130 | 151 | 151 | 0 | 68 | 0 | 0 | 2 |
[122] Cylindrophis ruffus Last Modified in 08/25/23 | 7 | 238 | 238 | 0 | 104 | 0 | 0 | 2 |
[123] Xenopeltis unicolor Last Modified in 08/25/23 | 2 | 230 | 229 | 0 | 118 | 0 | 0 | 2 |
[124] Anilius scytale Last Modified in 08/25/23 | 7 | 238 | 238 | 0 | 104 | 0 | 0 | 2 |
[125] † Spathorhynchus fossorium Last Modified in 08/25/23 | 170 | 150 | 150 | 0 | 29 | 0 | 0 | 2 |
[126] Rhineura floridana Last Modified in 08/25/23 | 7 | 235 | 235 | 0 | 107 | 0 | 0 | 2 |
[127] Bipes biporus Last Modified in 08/25/23 | 4 | 267 | 267 | 0 | 78 | 0 | 0 | 2 |
[128] Blanus cinereus Last Modified in 08/25/23 | 14 | 232 | 232 | 0 | 103 | 0 | 0 | 2 |
[129] Dibamus novaeguineae Last Modified in 08/25/23 | 10 | 235 | 234 | 0 | 105 | 0 | 0 | 2 |
[130] † Becklesius cataphractus Last Modified in 08/25/23 | 251 | 94 | 94 | 0 | 4 | 0 | 0 | 2 |
[131] † Neokotus sanfranciscanus Last Modified in 08/25/23 | 286 | 62 | 62 | 0 | 1 | 0 | 0 | 2 |
[132] † SMNS 91427 Last Modified in 08/25/23 | 332 | 17 | 17 | 0 | 0 | 0 | 0 | 2 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 2772 | |
Project overview | 182 | |
Media views | 445 | Media search (377 views); M892530 (68 views); |
Documents list | 109 | |
Matrix views | 126 | Matrix landing page (119 views); Matrix (7 views); |
Taxon list | 1465 | |
Bibliography | 92 | |
Views for media list | 133 | |
Specimen list | 220 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 1 | |
Matrix downloads | 1 | Matrix (1 download); |