Project 4392: F. F. Garberoglio, L. N. Triviño, A. Albino. 2022. A new madtsoiid snake from the Paleogene of South America (northwestern Argentina), based on an articulated postcranial skeleton. Journal of Vertebrate Paleontology. 42 ( e2128687):e2128687-1-e2128687-14.
Abstract
The Madtsoiidae are an extinct lineage of snakes known from the Late Cretaceous to the Late Pleistocene, with a rich fossil record distributed mainly across Gondwanan landmasses. However, only a few taxa are represented by cranial or articulated remains, and most madtsoiids are known only by isolated vertebrae. The unambiguous record ofMadtsoiidae from the Cenozoic in South America had been restricted to the genus Madtsoia from Eocene and Oligocene deposits of Patagonia and Brazil. Here, we describe a new madtsoiid taxon, Powellophis andina gen. et sp. nov., based on an articulated postcranial skeleton from the Mealla Formation (middle–late Paleocene) in northwestern Argentina. The new taxon is estimated to be around 3 meters long, with a vertebral morphology sharing similar features with other mid-to-large forms. Its inclusion in a recent analysis of madtsoiid relationships recovers Powellophis as an early member of a clade formed by mostly large bodied and gigantic taxa. Its presence in the Paleocene of northwestern Argentina fills the gap between the diverse Late Cretaceous and Eocene–Oligocene records of madtsoiids in South America, confirms their presence in northern Gondwana by the early Paleogene, and expands the diversity of the group.
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Article DOI: 10.1080/02724634.2022.2128687
Project DOI: 10.7934/P4392, http://dx.doi.org/10.7934/P4392
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 7313 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 265 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 592 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:256/9 |
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MorphoBank Project 4392
MorphoBank Project 4392
- Creation Date:
02 September 2022 - Publication Date:
15 November 2022 - Project views: 4376
- Matrix downloads: 2
Authors' Institutions
- Universidad Nacional del Mar de la Plata
- Museo de La Plata
- Universidad Nacional de la Plata (UNLP)
- Universidad Maimonides
Members
member name | taxa | specimens | media | media notes | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||||||||||
Fernando Garberoglio Project Administrator | 56 | 1 | 1 | 0 | 265 | 0 | 0 | 0 | 0 | 7313 (7139, 0, 174) | 0 | 0 | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M28959' (55 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] varanus Last Modified in 11/15/22 | 2 | 248 | 248 | 0 | 15 | 0 | 0 | 1 |
[2] † najash Last Modified in 11/15/22 | 31 | 236 | 231 | 0 | 3 | 0 | 0 | 1 |
[3] leptotyphlops Last Modified in 11/15/22 | 11 | 244 | 236 | 0 | 18 | 0 | 0 | 1 |
[4] anomalepididae Last Modified in 11/15/22 | 9 | 251 | 245 | 0 | 11 | 0 | 0 | 1 |
[5] typhlops Last Modified in 11/15/22 | 7 | 245 | 237 | 0 | 21 | 0 | 0 | 1 |
[6] † dinilysia Last Modified in 11/15/22 | 30 | 234 | 232 | 0 | 3 | 0 | 0 | 1 |
[7] † sanajeh Last Modified in 11/15/22 | 198 | 67 | 67 | 0 | 0 | 0 | 0 | 1 |
[8] † wonambi Last Modified in 11/15/22 | 84 | 180 | 180 | 0 | 1 | 0 | 0 | 1 |
[9] † yurlunggur Last Modified in 11/15/22 | 65 | 201 | 200 | 0 | 0 | 0 | 0 | 1 |
[10] anilius Last Modified in 11/15/22 | 5 | 254 | 254 | 0 | 6 | 0 | 0 | 1 |
[11] cylindrophis Last Modified in 11/15/22 | 2 | 259 | 259 | 0 | 4 | 0 | 0 | 1 |
[12] uropeltidae Last Modified in 11/15/22 | 6 | 273 | 248 | 0 | 11 | 0 | 0 | 1 |
[13] anomochilus Last Modified in 11/15/22 | 56 | 203 | 202 | 0 | 7 | 0 | 0 | 1 |
[14] † pachyrhachis Last Modified in 11/15/22 | 139 | 123 | 123 | 0 | 3 | 0 | 0 | 1 |
[15] † haasiophis Last Modified in 11/15/22 | 123 | 141 | 140 | 0 | 2 | 0 | 0 | 1 |
[16] † eupodophis Last Modified in 11/15/22 | 155 | 109 | 109 | 0 | 1 | 0 | 0 | 1 |
[17] xenopeltis Last Modified in 11/15/22 | 2 | 252 | 252 | 0 | 11 | 0 | 0 | 1 |
[18] loxocemus Last Modified in 11/15/22 | 2 | 263 | 262 | 0 | 1 | 0 | 0 | 1 |
[19] erycinae Last Modified in 11/15/22 | 3 | 282 | 261 | 0 | 1 | 0 | 0 | 1 |
[20] ungaliophiidae Last Modified in 09/02/22 | 7 | 261 | 256 | 0 | 2 | 0 | 0 | 1 |
[21] boinae Last Modified in 11/15/22 | 0 | 273 | 263 | 0 | 2 | 0 | 0 | 1 |
[22] pythoninae Last Modified in 11/15/22 | 1 | 270 | 263 | 0 | 1 | 0 | 0 | 1 |
[23] tropidophiidae Last Modified in 11/15/22 | 4 | 260 | 259 | 0 | 2 | 0 | 0 | 1 |
[24] bolyeriidae Last Modified in 09/02/22 | 4 | 256 | 253 | 0 | 8 | 0 | 0 | 1 |
[25] acrochordidae Last Modified in 11/15/22 | 10 | 249 | 247 | 0 | 8 | 0 | 0 | 1 |
[26] Basal colubroides Last Modified in 09/02/22 | 23 | 254 | 234 | 0 | 8 | 0 | 0 | 1 |
[27] † coniophis Last Modified in 11/15/22 | 209 | 56 | 55 | 0 | 1 | 0 | 0 | 1 |
[28] † Parviraptor estesi Last Modified in 11/15/22 | 249 | 15 | 15 | 0 | 1 | 0 | 0 | 1 |
[29] † Portugalophis lignites Last Modified in 11/15/22 | 238 | 26 | 26 | 0 | 1 | 0 | 0 | 1 |
[30] † Diablophis gilmorei Last Modified in 11/15/22 | 205 | 58 | 58 | 0 | 2 | 0 | 0 | 1 |
[31] † Eophis woodwardi Last Modified in 11/15/22 | 254 | 11 | 11 | 0 | 0 | 0 | 0 | 1 |
[32] † aff.parviraptorestesi Last Modified in 11/15/22 | 233 | 31 | 31 | 0 | 1 | 0 | 0 | 1 |
[33] † Menarana nosymena Last Modified in 11/15/22 | 213 | 51 | 51 | 0 | 1 | 0 | 0 | 1 |
[34] † Madtsoia camposi Last Modified in 11/15/22 | 199 | 66 | 66 | 0 | 0 | 0 | 0 | 1 |
[35] † Nanowana godthelpi Last Modified in 11/15/22 | 160 | 104 | 104 | 0 | 1 | 0 | 0 | 1 |
[36] † Nanowana schrenki Last Modified in 11/15/22 | 188 | 76 | 76 | 0 | 1 | 0 | 0 | 1 |
[37] † xiaophis Last Modified in 11/15/22 | 230 | 34 | 34 | 0 | 1 | 0 | 0 | 1 |
[38] † Nidophis insularis Last Modified in 11/15/22 | 221 | 43 | 43 | 0 | 1 | 0 | 0 | 1 |
[39] † Herensugea caristiorum Last Modified in 11/15/22 | 225 | 39 | 39 | 0 | 1 | 0 | 0 | 1 |
[40] † Menarana laurasiae Last Modified in 11/15/22 | 226 | 38 | 38 | 0 | 1 | 0 | 0 | 1 |
[41] † Patagoniophis australiensis Last Modified in 11/15/22 | 220 | 44 | 44 | 0 | 1 | 0 | 0 | 1 |
[42] † Alamitophis tingamarra Last Modified in 11/15/22 | 222 | 42 | 42 | 0 | 1 | 0 | 0 | 1 |
[43] † Madtsoia bai Last Modified in 11/15/22 | 223 | 42 | 42 | 0 | 0 | 0 | 0 | 1 |
[44] † Madtsoia madagascariensis Last Modified in 11/15/22 | 218 | 47 | 47 | 0 | 0 | 0 | 0 | 1 |
[45] † Gigantophis garstini Last Modified in 11/15/22 | 223 | 43 | 42 | 0 | 0 | 0 | 0 | 1 |
[46] † cpag-rankt-v-1-2 Last Modified in 11/15/22 | 235 | 29 | 29 | 0 | 1 | 0 | 0 | 1 |
[47] † Alamitophis elongatus Last Modified in 11/15/22 | 222 | 42 | 42 | 0 | 1 | 0 | 0 | 1 |
[48] † Adinophis fisaka Last Modified in 11/15/22 | 228 | 36 | 36 | 0 | 1 | 0 | 0 | 1 |
[49] † Madtsoia pisdurensis Last Modified in 11/15/22 | 225 | 40 | 40 | 0 | 0 | 0 | 0 | 1 |
[50] † Platyspondylophis tadkeshwarensis Last Modified in 11/15/22 | 226 | 38 | 38 | 0 | 1 | 0 | 0 | 1 |
[51] † Seismophis septentrionalis Last Modified in 11/15/22 | 226 | 38 | 38 | 0 | 1 | 0 | 0 | 1 |
[52] † Rionegrophis madtsoioides Last Modified in 11/15/22 | 225 | 39 | 39 | 0 | 1 | 0 | 0 | 1 |
[53] † Eomadtsoia ragei Last Modified in 11/15/22 | 227 | 38 | 37 | 0 | 1 | 0 | 0 | 1 |
[54] † Simoliophis rochebrunei Last Modified in 11/15/22 | 224 | 40 | 40 | 0 | 1 | 0 | 0 | 1 |
[55] † Powellophis andina Last Modified in 11/15/22 | 219 | 45 | 45 | 0 | 1 | 0 | 0 | 1 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 4376 | |
Project overview | 307 | |
Specimen list | 499 | |
Views for media list | 276 | |
Media views | 828 | Media search (691 views); M848118 (137 views); |
Matrix views | 239 | Matrix landing page (219 views); Data Matrix (20 views); |
Documents list | 206 | |
Bibliography | 393 | |
Taxon list | 1628 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 3 | |
Matrix downloads | 2 | Data Matrix (2 downloads); |
Project downloads | 1 |