Project 4495: S. I. Quiñones, A. E. Zurita, A. R. Miño-Boilini, A. M. Candela, C. A. Luna. 2022. Unexpected record of the aquatic sloth Thalassocnus (Mammalia, Xenarthra, Folivora) in the upper Neogene of the Puna (Jujuy, Argentina). Journal of Vertebrate Paleontology. 42 (1):e2109973.
Abstract
Xenarthra are, very probably, the most basally branching clade among Placentalia, and the result of the so-called “Splendid Isolation” of South America. Although this is the only endemic clade with living representatives, its current diversity is very poor compared with that achieved during most of the Cenozoic. One particular clade, Folivora (living and fossil sloths), includes one of the most enigmatic animals, Thalassocnus, the only genus of the subfamily Thalassocninae. It was originally interpreted as an aquatic sloth taking into account the previous records, which are limited to coastal areas of the latest Miocene and Pliocene of Peru and Chile. Here we present the first record of Thalassocnus from Argentina, which in turn represents the first finding of the genus in a continental sequence. The materials (JUY-P-0180, radius, ulna and part of the articulated left manus) were exhumed from the upper member of the Tafna Formation (Late Miocene–Pliocene) in the eastern Puna (Jujuy Province), Argentina. In agreement with our comparative study, the cladistic analysis corroborates its identification as belonging to the genus Thalassocnus, being placed in a relatively basal location. This finding is of paleobiogeographic and paleoenvironmental significance, due to its location, more than 1171 km away from the Peruvian locality (Sacaco) and more than 750 km from the nearest ones in Chile (Caldera). This extends the geographic range from 76°W to 65°53′W, and from typical littoral environments, to clearly more terrestrial ones. The evolutionary and paleobiogeographic history of Thalassocnus is more complex than previously interpreted.Read the article »
Article DOI: 10.1080/02724634.2022.2109973
Project DOI: 10.7934/P4495, http://dx.doi.org/10.7934/P4495
This project contains | Matrices |
---|---|
Download Project SDD File | Total scored cells: 977 Total media associated with cells: 0 Total labels associated with cell media: 0 |
Characters | |
Total characters: 61 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 144 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:61/0 |
Currently Viewing:
MorphoBank Project 4495
MorphoBank Project 4495
- Creation Date:
02 December 2022 - Publication Date:
02 December 2022 - Project views: 3916
- Matrix downloads: 5
Authors' Institutions
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
- Museo de La Plata
- Universidad Nacional del Nordeste
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
MorphoBank Curator Project Administrator | 22 | 1 | 1 | 61 | 0 | 0 | 977 (943, 0, 34) | 0 | 0 | 0 | ||||
Sofia Quinones Full membership | 0 | 0 | 0 | 0 | 0 | 0 | 0 (0, 0, 0) | 0 | 0 | 0 |
Taxonomic Overview for Matrix 'M29088' (22 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] Bradypus Last Modified in 12/02/22 | 3 | 45 | 45 | 0 | 13 | 0 | 0 | 2 |
[2] † Nematherium Last Modified in 12/02/22 | 52 | 9 | 9 | 0 | 0 | 0 | 0 | 2 |
[3] † Glossotherium Last Modified in 12/02/22 | 2 | 56 | 56 | 0 | 3 | 0 | 0 | 2 |
[4] † Catonyx Last Modified in 12/02/22 | 4 | 56 | 56 | 0 | 1 | 0 | 0 | 2 |
[5] † Hapalops Last Modified in 12/02/22 | 3 | 56 | 56 | 0 | 2 | 0 | 0 | 2 |
[6] † Megalonyx Last Modified in 12/02/22 | 7 | 51 | 51 | 0 | 3 | 0 | 0 | 2 |
[7] † Eucholoeops Last Modified in 12/02/22 | 35 | 26 | 26 | 0 | 0 | 0 | 0 | 2 |
[8] † Planops Last Modified in 12/02/22 | 33 | 28 | 28 | 0 | 0 | 0 | 0 | 2 |
[9] † Eremotherium laurillardi Last Modified in 12/02/22 | 8 | 47 | 47 | 0 | 6 | 0 | 0 | 2 |
[10] † Megatherium americanum Last Modified in 12/02/22 | 1 | 58 | 58 | 0 | 2 | 0 | 0 | 2 |
[11] † Mionothropus Last Modified in 12/02/22 | 27 | 33 | 33 | 0 | 1 | 0 | 0 | 2 |
[12] † Nothotherium Last Modified in 12/02/22 | 0 | 60 | 60 | 0 | 1 | 0 | 0 | 2 |
[13] † Nothrotheriops Last Modified in 12/02/22 | 0 | 60 | 60 | 0 | 1 | 0 | 0 | 2 |
[14] † Thalassocnus antiquus Last Modified in 12/02/22 | 5 | 56 | 56 | 0 | 0 | 0 | 0 | 2 |
[15] † Thalassocnus natans Last Modified in 12/02/22 | 2 | 59 | 59 | 0 | 0 | 0 | 0 | 2 |
[16] † Thalassocnus littoralis Last Modified in 12/02/22 | 0 | 61 | 61 | 0 | 0 | 0 | 0 | 2 |
[17] † Thalassocnus carolomartini Last Modified in 12/02/22 | 2 | 59 | 59 | 0 | 0 | 0 | 0 | 2 |
[18] † Thalassocnus yaucensis Last Modified in 12/02/22 | 5 | 56 | 56 | 0 | 0 | 0 | 0 | 2 |
[19] † Analcimorphus Last Modified in 12/02/22 | 45 | 16 | 16 | 0 | 0 | 0 | 0 | 2 |
[20] † Schismotherium Last Modified in 12/02/22 | 47 | 13 | 13 | 0 | 1 | 0 | 0 | 2 |
[21] † Pelecydon Last Modified in 12/02/22 | 42 | 19 | 19 | 0 | 0 | 0 | 0 | 2 |
[22] † Thalassocnus sp. JUY-P-0180 Last Modified in 12/02/22 | 42 | 19 | 19 | 0 | 0 | 0 | 0 | 2 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 3916 | |
Matrix views | 225 | Matrix landing page (209 views); Data matrix from Supplemental Data (16 views); |
Media views | 854 | Media search (725 views); M848407 (129 views); |
Documents list | 213 | |
Project overview | 330 | |
Bibliography | 170 | |
Views for media list | 279 | |
Specimen list | 385 | |
Taxon list | 1460 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 8 | |
Matrix downloads | 5 | Data matrix from Supplemental Data (5 downloads); |
Project downloads | 1 | |
Document downloads | 2 | Original data matrix, NEXUS, with character information (2 downloads); |