Hegetotherium

Hegetotherium is an extinct genus of mammals from the Middle Miocene (Santacrucian in the SALMA classification) of Argentina (Collón Curá, Sarmiento and Santa Cruz Formations) and Chile (Río Frías Formation), South America.

Hegetotherium
Temporal range: Mid Miocene (Santacrucian)
~17.5–16.5 Ma
↓
Skull of Hegetotherium mirabile
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Mammalia
Order:
†Notoungulata
Suborder:
†Hegetotheria
Family:
†Hegetotheriidae
Genus:
†Hegetotherium

Species
  • H. mirabile Ameghino 1887 (type)
  • H. cerdasensis Croft et al. 2016

Taxonomy

Hegetotherium is currently restricted to the type species, H. mirable, of which H. convexum, H. anceps, H. minum and H. andinum are synonyms, but also H. cerdasensis. "Hegetotherium" arctum was formerly assigned to this genus, but is clearly not a member of Hegetotheriidae. "Hegetotherium" novum was formerly referred to the closely related genus Prohegetotherium, but is now considered generically distinct from that genus.[1][2][3]

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References
  1. F. D. Seoane, S. R. Juñent, and E. Cerdeño. 2017. Phylogeny and paleobiogeography of Hegetotheriidae (Mammalia, Notoungulata). Journal of Vertebrate Paleontology 37(1):e1278547:1-13.
  2. D. A. Croft, A. A. Carlini, M. R. Ciancio, D. Brandoni, N. E. Drew, R. K. Engelman, and F. Anaya. 2016. New mammal faunal data from Cerdas, Bolivia, a middle-latitude Neotropical site that chronicles the end of the Middle Miocene Climatic Optimum in South America. Journal of Vertebrate Paleontology 36(5):e1163574
  3. Federico Damián Seoane; Esperanza Cerdeño (2019). "Systematic revision of Hegetotherium and Pachyrukhos (Hegetotheriidae, Notoungulata) and a new phylogenetic analysis of Hegetotheriidae". Journal of Systematic Palaeontology. in press. doi:10.1080/14772019.2018.1545146.


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