Limnocyon

Limnocyon; Temporal range: Early-Middle Eocene (Bridgerian to Uintan) 49–40.1 Ma PreꞒ Ꞓ O S D C P T J K Pg N Da. S T Ypr. Lut. B Pr. Rup. Ch.
	Skull of Limnocyon verus
	Life Restoration of L. verus
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	†Hyaenodonta
Clade:	†Limnocyoninae
Genus:	†Limnocyon; Marsh, 1872
Type species
	†Limnocyon verus; Marsh, 1872
Species
	†L. cuspidens (Morlo & Gunnell, 2005); †L. potens (Matthew, 1909); †L. verus (Marsh, 1872);
Synonyms
	synonyms of genus: Telmatocyon (Marsh, 1899) ; synonyms of species: L. potens: Limnocyon douglassi (Peterson, 1919) ; Limnocyon protens (Kay, 1957) ; ; L. verus: Limnocyon riparius (Marsh, 1872) ; Oxyaenodon wortmani (Van Valen, 1966) ; Sinopa vera (Matthew, 1899) ; Sinopa verus (Matthew, 1901) ; Stypolophus verus ; Telmatocyon riparius (Marsh, 1899) ; Triacodon grandis (Marsh, 1872) ; Viverravus riparius (Marsh, 1872) ; ;

Limnocyon ("swamp dog") is an extinct paraphyletic^[1] genus of limnocyonine hyaenodont that lived in North America during the Early to Middle Eocene, going extinct at the end of Uintan stage.^[1]^[7] Fossils of this animal have been found in California, Utah and Wyoming.^[8]

Description

Limnocyon was a small hyaenodont, the smaller species was L. versus with adults weighing 7.78 kg (17.2 lb). L. potens reached even larger sizes weighing 15.84 kg (34.9 lb).^[9] Like other limnocyonines, Limnocyon had only two molars in the upper and lower dentition.^[1]

References

1 2 3 4 Michael Morlo; Gregg F. Gunnell (2005). "New Species of Limnocyon (Mammalia, Creodonta) from the Bridgerian (Middle Eocene)". Journal of Vertebrate Paleontology. 25 (1): 251–255. doi:10.1671/0272-4634(2005)025[0251:nsolmc]2.0.co;2. S2CID 85666602.
↑ W. D. Matthew (1909.) "The Carnivora and Insectivora of the Bridger Basin, middle Eocene." Memoirs of the American Museum of Natural History 9:289-567
↑ O. C. Marsh (1872.) "Preliminary description of new Tertiary mammals. Part I." American Journal of Science 4(20):122-128
↑ J. Alroy (2002.) "Synonymies and reidentifications of North American fossil mammals."
↑ O. A. Peterson (1919.) "Report Upon the Material Discovered in the Upper Eocene of the Uinta Basin by Earl Douglas in the Years 1908-1909, and by O. A. Peterson in 1912." Annals of Carnegie Museum 12(2):40-168
↑ L. Van Valen (1966.) "Deltatheridia, a new order of Mammals." Bulletin of the American Museum of Natural History 132(1):1-126
↑ Gunnell, Gregg F.; Murphey, Paul C.; Stucky, R.K.; Townsend, Kathryn B.; Robinson, Peter; Zonneveld, John-Paul; Bartels, W. S. (2009). "Biostratigraphy and biochronology of the latest Wasatchian, Bridgerian, and Uintan North American Land Mammal "Ages"". Geology, Vertebrate Paleontology, and Biostratigraphy.
↑ Paleobiology Database: Limnocyon
↑ Egi, Naoko (2001). "Body mass estimates in extinct mammals from limb bone dimensions: the case of North American hyaenodontids". Palaeontology. 44 (3): 497–528. Bibcode:2001Palgy..44..497E. doi:10.1111/1475-4983.00189. S2CID 128832577.

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[Morlo2005-1] 1 2 3 4 Michael Morlo; Gregg F. Gunnell (2005). "New Species of Limnocyon (Mammalia, Creodonta) from the Bridgerian (Middle Eocene)". Journal of Vertebrate Paleontology. 25 (1): 251–255. doi:10.1671/0272-4634(2005)025[0251:nsolmc]2.0.co;2. S2CID 85666602.

[2] W. D. Matthew (1909.) "The Carnivora and Insectivora of the Bridger Basin, middle Eocene." Memoirs of the American Museum of Natural History 9:289-567

[3] O. C. Marsh (1872.) "Preliminary description of new Tertiary mammals. Part I." American Journal of Science 4(20):122-128

[4] J. Alroy (2002.) "Synonymies and reidentifications of North American fossil mammals."

[5] O. A. Peterson (1919.) "Report Upon the Material Discovered in the Upper Eocene of the Uinta Basin by Earl Douglas in the Years 1908-1909, and by O. A. Peterson in 1912." Annals of Carnegie Museum 12(2):40-168

[6] L. Van Valen (1966.) "Deltatheridia, a new order of Mammals." Bulletin of the American Museum of Natural History 132(1):1-126

[7] Gunnell, Gregg F.; Murphey, Paul C.; Stucky, R.K.; Townsend, Kathryn B.; Robinson, Peter; Zonneveld, John-Paul; Bartels, W. S. (2009). "Biostratigraphy and biochronology of the latest Wasatchian, Bridgerian, and Uintan North American Land Mammal "Ages"". Geology, Vertebrate Paleontology, and Biostratigraphy.

[pbd-8] Paleobiology Database: Limnocyon

[:0-9] Egi, Naoko (2001). "Body mass estimates in extinct mammals from limb bone dimensions: the case of North American hyaenodontids". Palaeontology. 44 (3): 497–528. Bibcode:2001Palgy..44..497E. doi:10.1111/1475-4983.00189. S2CID 128832577.

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