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Cochlops

From Wikipedia, the free encyclopedia
An extinct genus of mammals belonging to the armadillo order of xenarthrans
This article includes a list ofgeneral references, butit lacks sufficient correspondinginline citations. Please help toimprove this article byintroducing more precise citations.(June 2022) (Learn how and when to remove this message)

Cochlops
Carapace ofCochlops
Scientific classificationEdit this classification
Domain:Eukaryota
Kingdom:Animalia
Phylum:Chordata
Class:Mammalia
Order:Cingulata
Family:Chlamyphoridae
Subfamily:Glyptodontinae
Genus:Cochlops
Ameghino, 1889
Type species
Cochlops muricatus
Ameghino, 1889
Species
  • C. debilisAmeghino, 1891
  • C. muricatusAmeghino, 1889
Synonyms
  • Metopotoxus Ameghino, 1895

Cochlops is anextinctgenus ofglyptodont. It lived from the Early to MiddleMiocene, and its fossilized remains have been found inSouth America.

Description

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This animal, like all glyptodonts, had an armor formed by numerousosteoderms fused together, protecting most of its body. Its skull was characterized by a shortened rostrum, a facial profile strongly inclined towards the front, and the occipital plane was oblique. The shape of its skull prefigured that of later genera such asPanochthus. Its carapace was characterized by particularly wrinkled osteoderms, especially compared to other forms of archaic glyptodonts, such asAsterostemma andPropalaehoplophorus ; some osteoderms, especially in the pelvic area, had a particular ornamentation, with a large central conical tubercle surrounded by smaller wrinkled tubercles.

Classification

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The genusCochlops was first described in 1889 byFlorentino Ameghino, based on fossil remains found in EarlyMiocene terrains ofArgentina. The type species isCochlops muricatus, and the speciesC. debilis, described in 1891 by Ameghin, is also ascribed to the genus. The genusMetopotoxus was later synonymized with the genusCochlops.

Cochlops was a basal glyptodont, belonging to the tribePropalaehoplophorini, and related to the generaPropalaehoplophorus,Asterostemma andEucinepeltus.

Modern cladistic analysis suggests that Propalaehoplophorini is a paraphyletic group. Cladogram after Barasoain et al. 2022:[1]

Glyptodonts

Bibliography

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  • F. Ameghino. 1889. Contribución al conocimiento de los mamíferos fósiles de la República Argentina [Contribution to the knowledge of the fossil mammals of the Argentine Republic]. Actas de la Academia Nacional de Ciencias de la República Argentina en Córdoba 6:xxxii-1027
  • F. Ameghino. 1891. Nuevos restos de mamíferos fósiles descubiertos por Carlos Ameghino en el Eoceno inferior de la Patagonia austral. – Especies nuevas, adiciones y correcciones [New remains of fossil mammals discovered by Carlos Ameghino in the lower Eocene of southern Patagonia. – New species, additions, and corrections]. Revista Argentina de Historia Natural 1:289-328
  • S. F. Vizcaíno, J. C. Fernicola, and M. S. Bargo. 2012. Paleobiology of Santacrucian glyptodonts and armadillos (Xenarthra, Cingulata). In S. F. Vizcaíno, R. F. Kay, M. S. Bargo (eds.), Early Miocene Paleobiology in Patagonia: High-Latitude Paleocommunities of the Santa Cruz Formation 194–215
Genera ofarmadillos and their extinct allies
Incertae sedis
Peltephilidae
Pachyarmatheriidae
Pampatheriidae
Dasypodinae
Astegotheriini
Dasypodini
Chlamyphorinae
Euphractinae
Glyptodontinae
Tolypeutinae
Peltephilus ferox

Pampatherium humboldti

Doedicurus clavicaudatus
Cochlops

References

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  1. ^Barasoain, Daniel; Zurita, Alfredo E.; Croft, Darin A.; Montalvo, Claudia I.; Contreras, Víctor H.; Miño-Boilini, Ángel R.; Tomassini, Rodrigo L. (June 2022)."A New Glyptodont (Xenarthra: Cingulata) from the Late Miocene of Argentina: New Clues About the Oldest Extra-Patagonian Radiation in Southern South America".Journal of Mammalian Evolution.29 (2):263–282.doi:10.1007/s10914-021-09599-w.ISSN 1064-7554.S2CID 245945029.
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