Limnocyon

Extinct genus of mammals

Limnocyon Temporal range: 50.5–39.7 Ma PreꞒ Ꞓ O S D C P T J K Pg N middle Eocene

Skull of Limnocyon verus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	†Hyaenodonta
Family:	†Hyaenodontidae
Subfamily:	†Limnocyoninae
Genus:	†Limnocyon Marsh, 1872
Type species
†Limnocyon verus Marsh, 1872
Species
†L. cuspidens (Morlo & Gunnell, 2005)^[1] †L. potens (Matthew, 1909)^[2] †L. verus (Marsh, 1872)^[3]
Synonyms^[4]
synonyms of genus: Telmatocyon (Marsh, 1899) synonyms of species: L. potens: Limnocyon douglassi (Peterson, 1919)^[5] Limnocyon protens (Kay, 1957) L. verus: Limnocyon riparius (Marsh, 1872) Oxyaenodon wortmani (Van Valen, 1966)^[6] 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 genus of limnocyonid hyaenodonts that lived in North America during the middle Eocene. Fossils of this animal have been found in California, Utah and Wyoming.^[7]

Description

Limnocyon was a small omnivorous hyaenodontid, with some estimates placing it at less than 1 kg in weight.^[7] Like other limnocyonids, Limnocyon had only two molars in the upper and lower dentition.^[1]

References

^ ^a ^b 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
^ ^a ^b Paleobiology Database: Limnocyon

Mammals of clade Pan-Carnivora

Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Placentalia
Superorder: Laurasiatheria
Clade: Scrotifera
Grandorder: Ferungulata
Mirorder: Ferae

Pan-Carnivora

Carnivoramorpha	See Carnivoramorpha below ↓
†Hyaenodonta	See Hyaenodonta below ↓
†Oxyaenodonta	See Oxyaenodonta below ↓
†Wyolestidae	†Wyolestes
†Simidectes †Altacreodus †Tinerhodon

†Hyaenodonta

†Hyaenodontoidea

†Hyaenodontidae	†Alienetherium †Boritia †Cartierodon †Consobrinus †Cynohyaenodon †Eurotherium †Hyaenodon †Leonhardtina †Matthodon †Neosinopa †Oxyaenoides †Paenoxyaenoides †Paracynohyaenodon †Praecodens †Preregidens †Prodissopsalis †Propterodon †Protoproviverra †Quercytherium

†Proviverridae

†Allopterodon
†Lesmesodon
†Minimovellentodon
†Morlodon
†Parvagula
†Proviverra

†Afro‑Arabian
clade

†Parvavorodon
†Tritemnodon
†Koholia

†Indohyaenodontidae

†Glibzegdouia
†Indohyaenodon
†Yarshea

†Hyainailouroidea

†Hyainailouridae

†Maocyon/Orienspterodon clade

†Maocyon
†Orienspterodon

†Apterodontinae

†Apterodon
†Quasiapterodon

†Hyainailourinae

†Leakitherium †Megistotherium †Mlanyama †Metapterodon †Pakakali †Paroxyaena †Simbakubwa
†Akhnatenavus clade	†Akhnatenavus †Hemipsalodon †Ischnognathus
†Hyainailourini	†Exiguodon †Falcatodon †Hyainailouros †Parapterodon †Sectisodon †Sivapterodon †Isohyaenodon †Kerberos †Pterodon

†Prionogalidae

†Namasector
†Prionogale
†Thereutherium

†Teratodontinae

†Anasinopa
†Brychotherium
†Buhakia
†Dissopsalis
†Ekweeconfractus
†Furodon
†Kyawdawia
†Masrasector
†Metasinopa
†Paratritemnodon
†Teratodon

other representatives

†Eoproviverra †Gazinocyon †Pyrocyon
†Arfia clade	†Arfia
†Galecyon clade	†Galecyon
†Lahimia clade	†Boualitomus †Lahimia
†Limnocyonidae	†Iridodon †Limnocyon †Oxyaenodon †Prolaena †Prolimnocyon †Thinocyon
†Sinopidae	†Acarictis †Prototomus †Sinopa

ichnotaxa
of Hyaenodonta

†Creodontipus
†Dischidodacylus
†Sarcotherichnus
†Zanclonychopus
†Hyaenodontipus
†Quiritipes
†Sarjeantipes

†Oxyaenodonta

†Oxyaenidae

†Machaeroidinae	†Apataelurus †Diegoaelurus †Isphanatherium †Machaeroides
†Oxyaeninae	†Argillotherium †Dipsalidictis †Malfelis †Oxyaena †Patriofelis †Protopsalis †Sarkastodon
†Palaeonictinae	†Ambloctonus †Dipsalodon †Palaeonictis
†Tytthaeninae	†Tytthaena

Carnivoramorpha

Carnivoraformes
(Clade "A")

Clade "B"

†Messelogale †Miocyon †Simamphicyon †Uintacyon †Xinyuictis †Zodiocyon
†Quercygalidae	†Quercygale
†Gracilocyon/Oodectes clade	†Eogale †Gracilocyon †Oodectes †Paramiacis †Paroodectes

Clade "C"

Clade "D"

†Ceruttia
†Harpalodon
†Lycarion
†Neovulpavus
†Procynodictis
†Prodaphaenus
†Tapocyon
†Walshius

Carnivora
(Clade "E")

Caniformia	(See Caniformia)
Feliformia	(See Feliformia)

other representatives

†Africtis
†Dawsonicyon
†Miacis

ichnotaxa of
Carnivoraformes

†Falcatipes

†Viverravoidea

†Viverravidae

†Orientictis †Pappictidops †Preonictis †Variviverra
†Didymictinae	†Bryanictis †Didymictis †Intyrictis †Pristinictis †Protictis †Raphictis
†Ictidopappinae	†Ictidopappus
†Viverravinae	†Simpsonictis †Viverravus †Viverriscus