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Lycopsis

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Extinct marsupial-like mammal

Lycopsis
Temporal range: Mid-Late Miocene (Santacrucian-Chasicoan)
~16.3–9.0 Ma PreꞒ O S D C P T J K Pg N
Fossil of L. longirostrus
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Sparassodonta
Superfamily: Borhyaenoidea
Genus: Lycopsis
Cabrera 1927
Species
  • L. torresi Cabrera 1927 (type species)
  • L. longirostrus Marshall 1976
  • L. viverensis Forasiepi et al. 2003
Synonyms

Lycopsis is an extinct genus of South American metatherian that lived during the Miocene in Argentina and Colombia.

History

Although not named until 1927, Florentino Ameghino described a species now seen as synonymous with Lycopsis torresi, Anatherium oxyrhynchus, in 1895 based on a mandibular ramus with several teeth. The fossil was recovered from Puesto Estancia La Costa in Santa Cruz, Argentina, dating to the Miocene. The type material of Lycopsis was collected in July 1895 by "C. Berry" from the middle Miocene strata of the Santa Cruz Formation along the Santa Cruz River in the same area. The fossils (MLP 11–113) were fragmentary, constituting only several fragmentary jaw sections from the maxilla and mandible, including several molars. However, these fossils were not named until in 1927, Ángel Cabrera named Lycopsis torresi, the generic name meaning "wolf-like aspect" after the anatomy of the mandible and the specific name after Argentine paleontologist and the director of the Museo de la Plata at the time, Luis Maria Torres.

Taxonomy

Skull of Lycopsis

The cladogram after the analysis of Suárez et al., 2015, looks as follows:

Sparassodonta

Patene

Hondadelphys

Stylocynus

Hathliacynidae

Acyon

Cladosictis

Sipalocyon

Notogale

Sallacyon

Borhyaenoidea
Lycopsis

Lycopsis longirostrus

Lycopsis viverensis

Lycopsis torresi

Lycopsis padillai

Prothylacynus

Pharsophorus

Borhyaenidae

Borhyaena

Australohyaena

Arctodictis sinclairi

Arctodictis munizi

Callistoe

Paraborhyaena

Thylacosmilidae

Patagosmilus

Thylacosmilus

Distribution

Fossils of Lycopsis have been found in:

References

  1. Argot, C. (2004). "Functional-adaptive analysis of the postcranial skeleton of a Laventan borhyaenoid, Lycopsis longirostris (Marsupialia, Mammalia)". Journal of Vertebrate Paleontology. 24 (3): 689–708. doi:10.1671/0272-4634(2004)024[0689:FAOTPS]2.0.CO;2.
  2. ^ Marshall, L. G. (1977). A new species of Lycopsis (Borhyaenidae: Marsupialia) from the La Venta fauna (Late Miocene) of Colombia, South America. Journal of Paleontology, 633–642.
  3. ^ Lycopsis at Fossilworks.org
  4. ^ Cabrera, Á. (1927). Datos para el conocimiento de los dasiuroideos fósiles argentinos. Revista del Museo de la Plata, 30, 271–315.
  5. Argot, C. (2004). Functional-adaptive analysis of the postcranial skeleton of a Laventan borhyaenoid, Lycopsis longirostris (Marsupialia, Mammalia). Journal of Vertebrate Paleontology, 24(3), 689–708.
  6. Suárez, C.; Forasiepi, A. M.; Goin, F. J.; Jaramillo, C. (2015). "Insights into the Neotropics prior to the Great American Biotic Interchange: new evidence of mammalian predators from the Miocene of Northern Colombia". Journal of Vertebrate Paleontology. 36: e1029581. doi:10.1080/02724634.2015.1029581. hdl:11336/53653. S2CID 86264178.
Metatheria
Synapsida
Cynodontia
Mammalia
Metatheria
    • see below↓
Metatheria
Metatheria
Deltatheroida
Deltatheridiidae
Marsupialiformes
Sparassodonta
    • see below↓
Asiatheriidae
Archimetatheria
Stagodontidae
Pediomyoidea
Peradectidae
Alphadontidae
Herpetotheriidae
Anatoliadelphyidae
Polydolopimorphia
    • see below↓
Marsupialia
Didelphodon vorax

Alphadon sp.

Herpetotherium fugax
Sparassodonta
Sparassodonta
Hathliacynidae
Borhyaenoidea
Borhyaenidae
Proborhyaenidae
Thylacosmilidae
Thylacosmilus atrox
Polydolopimorphia
Polydolopimorphia
Bonapartheriiformes
Bonapartheriidae
Argyrolagidae
Chulpasiinae
Prepidolopidae
Rosendolopidae
Polydolopiformes
Polydolopidae
Sillustaniidae
Paleontology in Colombia
Notable
researchers
After 1900
19th century
Lycopsis is located in ColombiaBogotá FormationCerrejón FormationFloresta FormationHiló FormationValle Alto FormationPaja FormationHonda Group
Major
fossiliferous
stratigraphic units
Pleistocene
Neogene
Paleogene
Cretaceous
Jurassic
Devonian
Notable fossils
Pleistocene
Honda Gp.
Gualanday Gp.
Bogotá Fm.
Cerrejón Fm.
Oliní Gp.
Hondita Fm.
Hiló Fm.
Paja Fm.
Arcabuco Fm.
Valle Alto Fm.
Cuche Fm.
Floresta Fm.
CategoryImages
Taxon identifiers
Lycopsis
Categories: