Isthminia

Isthminia is an extinct genus of river dolphin-like cetacean from the Late Miocene epoch (Hemphillian in the NALMA classification) that lived in Panama. The type species is I. panamensis.[1][2]

Isthminia
Temporal range: Late Miocene (Hemphillian)
7.246–5.332 Ma
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Infraorder: Cetacea
Family: Iniidae
Genus: Isthminia
Pyenson et al., 2015
Species:
I. panamensis
Binomial name
Isthminia panamensis
Pyenson et al., 2015

Description

Fossils of Isthminia were found in the Chagres Formation in Panama. On the basis of the fossil material, including a partial skull, the length of this kind is estimated to be about 285 centimetres (9.35 ft). Isthminia probably had a predominantly marine lifestyle.[1]

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References

  1. Pyenson, Nicholas D.; Vélez-Juarbe, Jorge; Gutstein, Carolina S.; Little, Holly; Vigil, Dioselina; O'Dea, Aaron (2015). "Isthminia panamensis, a new fossil inioid (Mammalia, Cetacea) from the Chagres Formation of Panama and the evolution of 'river dolphins' in the Americas". PeerJ. 3: e1227. doi:10.7717/peerj.1227. PMC 4562255. PMID 26355720.
  2. Isthminia at Fossilworks.org


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