Proargyrohyrax

Proargyrohyrax
Temporal range: Early-Middle Oligocene (Tinguirirican)
~33.9–31.0 Ma
↓
Dental and mandibular fragment of Proargyrohyrax curanderensis
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: †Notoungulata
Family: †Interatheriidae
Subfamily: †Interatheriinae
Genus: †Proargyrohyrax
Hitz et al. 2000
Species:
†P. curanderensis
Binomial name
†Proargyrohyrax curanderensis
Hitz et al. 2000

Proargyrohyrax is an extinct genus of interatheriine notoungulates that lived from the Early to Middle Oligocene in what is now Argentina. Fossils of this genus have been found in the Sarmiento Formation of Argentina.[1][2][3]

Etymology

The genus name, Proargyrohyrax, is derived from "pro", meaning "before", and Argyrohyrax, not only referring to the similarity of the latter genus but also its earlier occurrence. The specific name, curanderensis, refers to the geographic location where it was found, La Curandera.[1]

Description

Proargyrohyrax is a small-sized interatheriid. Proargyrohyrax mostly resembles Santiagorothia, in having a well-developed parastyle that curves in a labial orientation and connects to the moderately developed column of the paracone. In addition, Proargyrohyrax can be distinguished from Santiagorothia in having the upper and lower premolars more molariform, a larger development of the labial fossettes on the upper premolars, and the widened trigonid and talonid on the third premolar.[1][2]

References

  1. ^ a b c Hitz, Ralph B.; Reguero, Marcelo; Wyss, André R.; Flynn, John J.; History, Field Museum of Natural (2000). "New interatheriines (Interatheriidae, notoungulata) from the Paleogene of central Chile and southern Argentina". Fieldiana. 42: 1–42. doi:10.5962/bhl.title.5169. hdl:11336/111062.
  2. ^ a b Dozo, María Teresa; Ciancio, Martín; Bouza, Pablo José; Martínez, Gastón (2014). "New association of Paleogene Mammals in Eastern of Patagonia (Chubut Province, Argentina): biochronological and paleobiogeographical implications". Andean Geology. 41 (1). doi:10.5027/andgeoV41n1-a09. hdl:11336/27088. Material was copied from this source, which is available under a Creative Commons Attribution 3.0 International License
  3. ^ Madden, Richard H.; Carlini, Alfredo A.; Vucetich, Maria Guiomar; Kay, Richard F. (2010-06-17). "Rodent-like notoungulates (Typotheria) from Gran Barranca, Chubut Province, Argentina: Phylogeny and systematics". The Paleontology of Gran Barranca: Evolution and Environmental Change Through the Middle Cenozoic of Patagonia. Cambridge University Press. ISBN 978-0-521-87241-6.