Walshina

Not to be confused with the moth genus Walshia.

Walshina Temporal range: 46.2–42.0  Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Dentition of Walshina esmaraldensis
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Primates
Suborder:	Haplorhini
Family:	† Omomyidae
Genus:	† Walshina López-Torres et al., 2018
Species
W. esmaraldensis (López-Torres et al., 2018) W. mcgrewi (Robinson, 1968) W. shifrae (Krishtalka, 1978)
Synonyms
Ignacius mcgrewi Phenacolemur shifrae

Walshina is a genus of omomyid primate from Eocene North America.

Description

Walshina has smooth enamel on its lower molars, similar to those of the related genus Trogolemur. In size, Walshina has among the smallest molars of all North American omomyids. ^[1] This has led researchers to speculate it is among the smallest omomyids in body mass as well. ^[2]

Classification

Due to its fragmentary nature, the taxonomic placement of Walshina has been debated. Morphologically, the molars of Walshina resemble those of Paromomyidae, which has led to Walshina being placed inside the clade. This is refuted, however, and most modern literature returns Walshina as a true omomyid. ^{[2] [3]} Some species have also previously been assigned to the genus Ignacius . ^[4]

References

1. Scarborough~[e-mail], Sergi López-Torres~University of Toronto; Scarborough~[e-mail], Mary T. Silcox~University of Toronto; Paleontology~[e-mail], Patricia A. Holroyd~University of California Museum of (2018-09-22). "New omomyoids (Euprimates, Mammalia) from the late Uintan of southern California, USA, and the question of the extinction of the Paromomyidae (Plesiadapiformes, Primates)". Palaeontologia Electronica. 21 (3): 756. Bibcode:2018PalEl..21..756L. doi:10.26879/756 . Retrieved 2025-09-17.
2. Lopez-Torres, Sergi (2017-06-01). "The Paromomyidae (Primates, Mammalia): Systematics, Evolution, and Ecology".{{cite journal}}: Cite journal requires |journal= (help)
3. "Mindat.org". www.mindat.org. Retrieved 2025-09-17.
4. Robinson, P. (1968). "The paleontology and geology of the Badwater Creek area, central Wyoming. Part 4. Late Eocene primates from Badwater, Wyoming, with a discussion of material from Utah". Annals of the Carnegie Museum. 39: 307–326. Bibcode:1968AnCM...39..307R. doi:10.5962/p.247167.