Biology:Interatheriinae

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Short description: Extinct subfamily of mammals

Interatheriinae
Temporal range: Early Eocene-Early Pliocene (Casamayoran-Montehermosan)
~54.0–5.3 Ma
Protypotherium Fossil.jpg
Fossil of P. australe. Exhibit in the National Museum of Nature and Science, Tokyo, Japan .
Scientific classification e
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Notoungulata
Suborder: Typotheria
Family: Interatheriidae
Subfamily: Interatheriinae
Ameghino, 1887
Genera

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]

Description

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

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

Eopachyrucos pliciferus

Santiagorothia chiliensis

Federicoanaya sallaensis

Brucemacfaddenia boliviensis

Archaeophylus patrius

Progaleopithecus tournoueri

Argyrohyrax proavus

Interatherium robustum

Cochilius volvens

Protypotherium australe

Protypotherium endiadys

Protypotherium distinctum

Protypotherium sinclairi

Miocochilius federicoi

Miocochilius anamopodus

Protypotherium minutum

Protypotherium colloncurensis

References

  1. 1.0 1.1 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. https://doi.org/10.1080/14772019.2021.1995906. 
  2. Hitz, Ralph B.; Billet, Guillaume; Derryberry, Dewayne (2008). "New interatheres (Mammalia, Notoungulata) from the Late Oligocene Salla beds of Bolivia" (in en). Journal of Paleontology 82 (3): 447–469. doi:10.1666/07-022.1. ISSN 0022-3360. https://www.researchgate.net/publication/228622965. 
  3. 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. https://www.researchgate.net/publication/350468798. 
  4. 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. https://bioone.org/journals/ameghiniana/volume-57/issue-2/AMGH.11.01.2020.3271/A-New-Typothere-Notoungulate-Mammalia--Interatheriidae-from-the-Miocene/10.5710/AMGH.11.01.2020.3271.full. 
  5. 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. https://doi.org/10.1080/02724634.2021.1956940. 
  6. 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. ISSN 1477-2019. https://www.researchgate.net/publication/279538625. 
  7. 7.0 7.1 7.2 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. CC-BY icon.svg Material was copied from this source, which is available under a Creative Commons Attribution 4.0 International License
  8. 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. https://www.researchgate.net/publication/233138660. 
  9. Simpson, George Gaylord (1945). "The principles of classification and a classification of mammals." (in en-US). Bulletin of the American Museum of Natural History 85: 1–350. https://digitallibrary.amnh.org/handle/2246/1104. 

Wikidata ☰ Q33139823 entry