Project 3597: M. Lorente. 2020. Cotylar Fossa, Its Interpretation and Functionality. The Case from South American Native Ungulates. Ameghiniana. 57 (4):null.
Abstract
The cotylar fossa is a complex anatomical character in the astragalar medial malleolar facet. It represents a dynamic relationship between the astragalus and the tibia in the upper tarsal joint. The astragalus must accommodate the medial tibial malleolus when the tibia is in an extreme flexion. It is one of the three morphological synapomorphies considered for Afrotheria, although it is also a recurrent trait among different groups of mammals. Here, fossil South American Native Ungulates and extant mammals were surveyed to reevaluate how much this character is spread and how variable it is. Beyond afrotherians, it is observed that it also appears in primates, macropodid marsupials, laurasiatherian archaic ungulates, perissodactyls, pantodonts, and dinoceratans; it is also in some but not all of the extinct endemic ungulates from South America. No function has been suggested before for the presence of a cotylar fossa. The cotylar fossa could be an adaptation to a passive, rest related posture. Extreme flexion of the tibia/fibula over the foot happens when animal sits or lies down. Because of this, the cotylar fossa may not represent a synapomorphy of afrotherians but a homoplastic feature convergently developed several times. The cotylar fossa, as first described, is more characteristic of the order Primates than of any other taxa, including Afrotheria. But, there is more than one kind of cotylar fossa, and this variation could correspond to more than one cause, including phylogenetic constraints.Read the article »
Article DOI: 10.5710/AMGH.08.06.2020.3306
Project DOI: 10.7934/P3597, http://dx.doi.org/10.7934/P3597
This project contains | Matrices |
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Download Project SDD File | Total scored cells: 70 Total media associated with cells: 49 Total labels associated with cell media: 9 |
Characters | |
Total characters: 2 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 4 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:2/0 |
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MorphoBank Project 3597
MorphoBank Project 3597
- Creation Date:
12 December 2019 - Publication Date:
31 August 2020 - Project views: 48001
- Matrix downloads: 7
Authors' Institutions
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
- Universidad Nacional de la Plata (UNLP)
Members
member name | taxa | specimens | media | chars | character
| cell scorings (scored, NPA, "-") | cell
| rules | ||||||
Malena Lorente Project Administrator | 107 | 57 | 48 | 2 | 0 | 0 | 70 (70, 0, 0) | 49 | 9 | 0 |
Taxonomic Overview for Matrix 'M26382' (63 Taxa)
taxon | unscored cells |
scored cells |
no cell support |
NPA cells |
"-" cells | cell images | labels on cell images |
member access |
[1] † DidolodusMACN? Last Modified in 03/03/20 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 |
[2] † DidolodusAMNH? Last Modified in 03/03/20 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 |
[3] Hyrax Last Modified in 12/12/19 | 0 | 2 | 1 | 0 | 0 | 1 | 0 | 1 |
[4] Procavia Last Modified in 12/12/19 | 0 | 2 | 0 | 0 | 0 | 2 | 0 | 1 |
[5] Tenrec Last Modified in 12/12/19 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |
[6] Ozotoceros Last Modified in 12/12/19 | 0 | 2 | 1 | 0 | 0 | 1 | 1 | 1 |
[7] Lama glama Last Modified in 02/13/20 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 |
[8] Kobus leche Last Modified in 02/14/20 | 0 | 2 | 0 | 0 | 0 | 2 | 0 | 1 |
[9] † Astraponotus Last Modified in 03/03/20 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 |
[10] † Astrapotheriidae ind. Last Modified in 03/03/20 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
[11] † Astrapotherium Last Modified in 08/12/20 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |
[12] † Liarthrus Last Modified in 03/03/20 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 |
[13] † Parastrapotherium Last Modified in 03/03/20 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 |
[14] † Trigonostylops Last Modified in 03/03/20 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 |
[15] Conepatus Last Modified in 12/12/19 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |
[16] Eira Last Modified in 12/12/19 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |
[17] Galictis Last Modified in 12/12/19 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |
[18] Leopardus Last Modified in 12/12/19 | 1 | 1 | 0 | 0 | 0 | 2 | 0 | 1 |
[19] Lincodon Last Modified in 12/12/19 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |
[20] Lontra Last Modified in 12/12/19 | 0 | 2 | 0 | 0 | 0 | 2 | 0 | 1 |
[21] Lycalopex Last Modified in 12/12/19 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |
[22] Potus Last Modified in 12/12/19 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |
[23] Procyon Last Modified in 12/12/19 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |
[24] Macropidae Last Modified in 12/12/19 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |
[25] Macropus Last Modified in 12/12/19 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 |
[26] † Diadiaphorus Last Modified in 03/03/20 | 0 | 2 | 0 | 0 | 0 | 2 | 0 | 1 |
[27] † Licaphrium Last Modified in 03/03/20 | 0 | 2 | 1 | 0 | 0 | 2 | 0 | 1 |
[28] † Macrauchenia Last Modified in 03/03/20 | 0 | 2 | 1 | 0 | 0 | 1 | 0 | 1 |
[29] † Miguelsoria Last Modified in 03/03/20 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |
[30] † Protolipterna Last Modified in 03/03/20 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |
[31] † Theosodon Last Modified in 08/12/20 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 |
[32] † Licaphrium Last Modified in 12/19/19 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
[33] † Thoatherium Last Modified in 08/12/20 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 |
[34] † Adinotherium Last Modified in 08/12/20 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 |
[35] † Asmodeus Last Modified in 03/03/20 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 |
[36] † Colbertia Last Modified in 03/03/20 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 |
[37] † Hegetotherium Last Modified in 08/12/20 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 |
[38] † Homalodotherium Last Modified in 03/03/20 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 |
[39] † Morphippus Last Modified in 03/03/20 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |
[40] † Nesodon Last Modified in 03/03/20 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |
[41] † Notostylops Last Modified in 03/03/20 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |
[42] † Pachyrukhos Last Modified in 08/12/20 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |
[43] † Pantostylops Last Modified in 03/03/20 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 |
[44] † Periphragnis Last Modified in 03/03/20 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 |
[45] † Pleurostylodon Last Modified in 03/03/20 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 |
[46] † Protypotherium Last Modified in 03/03/20 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
[47] † Thomashuxleya Last Modified in 03/03/20 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 |
[48] † Toxodon Last Modified in 03/03/20 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 |
[49] † Trachytherus Last Modified in 03/03/20 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 |
[50] † Pantolambda Last Modified in 03/03/20 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |
[51] Equus Last Modified in 12/12/19 | 1 | 1 | 0 | 0 | 0 | 2 | 2 | 1 |
[52] Alouatta Last Modified in 12/12/19 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 |
[53] Callithrix Last Modified in 12/12/19 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 |
[54] Mandrillus Last Modified in 12/12/19 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |
[55] Pan Last Modified in 12/12/19 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
[56] Papio Last Modified in 12/12/19 | 0 | 2 | 0 | 0 | 0 | 2 | 0 | 1 |
[57] Presbytis Last Modified in 12/12/19 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
[58] † Pyrotherium Last Modified in 08/12/20 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 |
[59] Dolichotis Last Modified in 12/12/19 | 0 | 2 | 1 | 0 | 0 | 1 | 0 | 1 |
[60] Lagidium Last Modified in 03/12/20 | 0 | 2 | 0 | 0 | 0 | 2 | 0 | 1 |
[61] Lagostomus Last Modified in 12/12/19 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |
[62] Rattus Last Modified in 02/14/20 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 |
[63] Dasypus Last Modified in 08/12/20 | 0 | 2 | 0 | 0 | 0 | 2 | 0 | 1 |
Project views
type | number of views | Individual items viewed (where applicable) |
Total project views | 48001 | |
Project overview | 1121 | |
Media views | 17584 | Media search (2024 views); M683002 (315 views); M683004 (322 views); M683005 (347 views); M683008 (321 views); M683010 (348 views); M683012 (311 views); M683014 (365 views); M683015 (309 views); M683016 (313 views); M683017 (317 views); M683018 (312 views); M683020 (340 views); M683022 (336 views); M683024 (329 views); M683025 (311 views); M683026 (353 views); M683028 (312 views); M683030 (338 views); M683033 (352 views); M683042 (336 views); M683043 (366 views); M683045 (322 views); M683048 (314 views); M683049 (301 views); M683051 (351 views); M683052 (324 views); M683053 (307 views); M683061 (325 views); M683062 (335 views); M683063 (319 views); M683064 (321 views); M683067 (376 views); M683069 (350 views); M683076 (324 views); M683077 (329 views); M683079 (358 views); M683081 (315 views); M683082 (321 views); M683083 (342 views); M683088 (304 views); M683091 (296 views); M685925 (299 views); M685926 (286 views); M685927 (301 views); M685928 (309 views); M686849 (307 views); M686908 (282 views); M686909 (286 views); M683080 (1 view); M686912 (1 view); M683044 (1 view); |
Matrix views | 732 | Cotylar fossa (123 views); Matrix landing page (609 views); |
Taxon list | 5867 | |
Specimen list | 18907 | |
Bibliography | 1181 | |
Folio views | 777 | Folio list (473 views); Notoungulata (304 views); |
Views for media list | 1829 | |
Documents list | 3 |
Project downloads
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 123 | |
Project downloads | 116 | |
Matrix downloads | 7 | Cotylar fossa (7 downloads); |