Interatheriinae is an extinct subfamily of interatheriids that consisted of notoungulates dating from the Early Eocene (Casamayoran SALMA) to the Early Pliocene (Montehermosan SALMA). The subfamily includes the genera Archaeophylus, Argyrohyrax, Boleatherium, Brucemacfaddenia, Caenophilus, Choichephilum, Cochilius, Eopachyrucos, Federicoanaya, Interatherium, Juchuysillu, Miocochilius, Neoicochilus, Patriarchus, Proargyrohyrax, Progaleopithecus, Protypotherium, and Santiagorothia.[1][2][3][4][5] They were small to medium sized interatheres, and when compared to the other subfamily, Notopithecinae, interatheriines are found to occupy an advanced, derived position in the family.[6][7]
| Interatheriinae | |
|---|---|
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| Fossil of P. australe. Exhibit in the National Museum of Nature and Science, Tokyo, Japan. | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | †Notoungulata |
| Suborder: | †Typotheria |
| Family: | †Interatheriidae |
| Subfamily: | †Interatheriinae Ameghino, 1887 |
| Genera | |
Description edit
Interatheriines were generally small to medium-sized interatheriids, and rarely exceeded the size of a groundhog. Compared with the other representatives of the suborder Typotheria, interatheriiness were mainly characterized by certain dental features, including the absence of roots in the anterior incisors. The skulls of interatheriines were usually equipped with full dentition. The best-known forms include Protypotherium, which was long-legged and vaguely rabbit-like in terms of appearance, and Interatherium, which was short-legged and weasel-like in terms of appearance, both from the Early Miocene. Other well-known genera are Cochilius, akin to the previous ones, and the bizarre Miocochilius, equipped with long two-toed legs, presumably an extreme adaptation to running.[8][7]
Taxonomy edit
The subfamily Interatheriinae was established in 1887 by Florentino Ameghino.[9] The Interatheriinae subfamily includes the most derived interatheriids, the most derived of which include Boleatherium, Caenophilus, Choichephilum, Cochilius, Interatherium, Juchuysillu, Miocochilius, and Protypotherium.[1] According to Vera et al. 2017, the Interatheriinae is defined as "the most recent common ancestor of Eopachyrucos pliciferus and Interatherium robustum, and all of its descendants".
The following cladogram of the Interatheriinae is based on Vera et al. 2017, showing the position of interatheriines.[7]
| Interatheriinae |
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References edit
- ^ a b Vera, Bárbara; Scarano, Alejo C.; Reguero, Marcelo A. (2021-07-18). "A new Interatheriinae (Mammalia, Notoungulata) from the Cerro Boleadoras Formation (Santa Cruz, Argentina) and the evolution of the tarsus within the lineage during the Miocene". Journal of Systematic Palaeontology. 19 (14): 1003–1030. doi:10.1080/14772019.2021.1995906. ISSN 1477-2019. S2CID 245210493.
- ^ Hitz, Ralph B.; Billet, Guillaume; Derryberry, Dewayne (2008). "New interatheres (Mammalia, Notoungulata) from the Late Oligocene Salla beds of Bolivia". Journal of Paleontology. 82 (3): 447–469. doi:10.1666/07-022.1. ISSN 0022-3360. S2CID 85682776.
- ^ Fernández, Mercedes; Fernicola, Juan C.; Cerdeño, Esperanza (2021). "Deciduous dentition and dental eruption sequence in Interatheriinae (Notoungulata, Interatheriidae): implications in the systematics of the group". Journal of Paleontology. 95 (4): 861–885. doi:10.1017/jpa.2021.7. ISSN 0022-3360. S2CID 233649237.
- ^ Croft, Darin A.; Anaya, Federico (2020). "A New Typothere Notoungulate (Mammalia: Interatheriidae), from the Miocene Nazareno Formation of Southern Bolivia". Ameghiniana. 57 (2): 189–208. doi:10.5710/AMGH.11.01.2020.3271. ISSN 0002-7014. S2CID 218764359.
- ^ Fernández, Mercedes; Fernicola, Juan C.; Cerdeño, Esperanza (2021-07-04). "A new genus of Interatheriinae (Interatheriidae, Notoungulata) from the Santa Cruz Formation (early–middle Miocene), Santa Cruz Province, Argentina, and the revision of the genus Cochilius Ameghino, 1902". Journal of Vertebrate Paleontology. 41 (4): e1956940. doi:10.1080/02724634.2021.1956940. ISSN 0272-4634. S2CID 239647102.
- ^ Vera, Bárbara (2016-06-02). "Phylogenetic revision of the South American notopithecines (Mammalia: Notoungulata)". Journal of Systematic Palaeontology. 14 (6): 461–480. doi:10.1080/14772019.2015.1066454. hdl:11336/182818. ISSN 1477-2019. S2CID 86017202.
- ^ a b c Vera, Bárbara Soledad; Reguero, Marcelo Alfredo; Gonzalez, Laureano Raul (December 2017). "The Interatheriinae notoungulates from the middle Miocene Collón Curá Formation in Argentina". Acta Palaeontologica Polonica. 62. doi:10.4202/app.00373.2017. hdl:11336/56874.
Material was copied from this source, which is available under a Creative Commons Attribution 4.0 International License
- ^ Billet, Guillaume (2011-12-01). "Phylogeny of the Notoungulata (Mammalia) based on cranial and dental characters". Journal of Systematic Palaeontology. 9 (4): 481–497. doi:10.1080/14772019.2010.528456. ISSN 1477-2019. S2CID 84159942.
- ^ Simpson, George Gaylord (1945). "The principles of classification and a classification of mammals". Bulletin of the American Museum of Natural History. 85: 1–350. hdl:2246/1104.
