Vassacyon

Vassacyon ("wasatchian dog") is an extinct genus of placental mammals from clade Carnivoraformes, that lived in North America and Europe from the late Paleocene to early Eocene.[7][8][9] It is considered the largest of the early Eocene mammals.

Vassacyon
Temporal range: late Paleocene to early Eocene
Skull of Vassacyon promicrodon
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Clade: Pan-Carnivora
Clade: Carnivoramorpha
Clade: Carnivoraformes
Genus: †Vassacyon
Matthew, 1909[1]
Type species
†Vassacyon promicrodon
Wortman & Matthew, 1899
Species
  • †V. bowni (Heinrich, 2008)[2]
  • †V. prieuri (Solé, 2016)[3]
  • †V. promicrodon (Wortman & Matthew, 1899)[4]
  • †V. taxidiotis (Solé, 2013)[5]
Synonyms
synonyms of species:
  • V. promicrodon:
    • Prodaphaenus promicrodon (Wortman, 1901)[6]
    • Uintacyon promicrodon (Wortman & Matthew, 1899)

Phylogeny

The phylogenetic relationships of genus Vassacyon are shown in the following cladogram:[10][11][3][12]

 Carnivoramorpha 
 †Viverravidae 

†Viverravoidea

 ? 

†Carnivoramorpha sp. (UALVP 50993 & UALVP 50994)

 ? 

†Ravenictis

 sensu lato 
 ? 

†Carnivoramorpha sp. (UALVP 31176)

 ? 

†Carnivoramorpha sp. (USNM 538395)

 ? 

†"Sinopa" insectivorus

 Carnivoraformes 
 Clade "B" 

†Eogale

†"Miacis" sp. (CM 67873 & CM 77299)

†Gracilocyon igniculus

†Gracilocyon winkleri

†Gracilocyon solei

 †Gracilocyon

†Gracilocyon sp. (Jibou, Romania)

†Gracilocyon rosei

†Gracilocyon rundlei

†Paramiacis

†Paroodectes

 †Oodectes jepseni 

 †Oodectes 

 †Oodectes herpestoides 

 †Oodectes proximus 

 †Oodectes pugnax 

 †Uintacyon hookeri 

 †Uintacyon rudis 

 †Uintacyon 

 †Uintacyon massetericus 

 †Uintacyon vorax 

 †Uintacyon asodes 

 †Uintacyon edax 

 †Uintacyon acutus 

 †Uintacyon jugulans 

 †Uintacyon gingerichi 

†Xinyuictis

†Zodiocyon

†Miocyon

†Simamphicyon

 †Uintacyon sp. (USGS 1983) 

†Messelogale

†Quercygalidae

 Clade "C" 

†Palaearctonyx

 (†Phlaodectes) 

†Vulpavus ovatus

†Vulpavus profectus

†Vulpavus australis

†Vulpavus canavus

†Vulpavus completus

 †Vulpavus

†Vulpavus farsonensis

†Vulpavus palustris

 †Vassacyon 

†Vassacyon bowni

†Vassacyon prieuri

†Vassacyon sp. (CM 82447 & CM 82448)

†Vassacyon promicrodon

†Vassacyon taxidiotis

†Dormaalocyon

†"Miacis" exiguus

†"Miacis" deutschi

†Africtis

 ? 

†Carnivoraformes undet. Genus B

†Dawsonicyon

†"Miacis" boqinghensis

†"Miacis" hookwayi

†"Miacis" latidens

†"Miacis" petilus

 ? 

†Carnivoraformes undet. Genus A

†Miacis

 Clade "D" 

†Lycarion

†"Miacis" hargeri

 ? 

†Ceruttia

†"Miacis" invictus

†"Miacis" lushiensis

†Neovulpavus

†Harpalodon

†Procynodictis

†Prodaphaenus

 ? 

†Walshius

†"Miacis" gracilis

†Tapocyon

Carnivora (sensu stricto)

†Gracilocyon/Oodectes clade
†Vulpavus clade
 (Carnivora [sensu lato]) 

See also

References
  1. 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
  2. Heinrich, R. E.; Strait, S. G.; Houde, P. (2008). "Earliest Eocene Miacidae (Mammalia: Carnivora) from northwestern Wyoming". Journal of Paleontology. 82 (1): 154–162. Bibcode:2008JPal...82..154H. doi:10.1666/05-118.1. S2CID 35030667.
  3. Solé, Floréal; Smith, Thierry; De Bast, Eric; Codrea, Vlad; Gheerbrant, Emmanuel (2016). "New carnivoraforms from the latest Paleocene of Europe and their bearing on the origin and radiation of Carnivoraformes (Carnivoramorpha, Mammalia)". Journal of Vertebrate Paleontology. 36 (2): e1082480. Bibcode:2016JVPal..36E2480S. doi:10.1080/02724634.2016.1082480. ISSN 0272-4634. S2CID 87537565.
  4. J. L. Wortman and W. D. Matthew (1899.) "The ancestry of certain members of the Canidae, the Viverridae, and Procyonidae." Bulletin of the American Museum of Natural History 12(6):109-138
  5. Floréal Solé; Emmanuel Gheerbrant; Marc Godinot (2013). "The "miacids" (Carnivoraformes, Mammalia) from the Early Eocene locality of Le Quesnoy (MP7, France); first occurrence of Vassacyon in Europe". Comptes Rendus Palevol. 12 (4): 191–202. Bibcode:2013CRPal..12..191S. doi:10.1016/j.crpv.2013.05.001.
  6. J. L. Wortman (1901.) "Studies of Eocene Mammalia in the Marsh Collection, Peabody Museum." The American Journal of Science, series 4 12:193-206
  7. McKenna, Malcolm C.; Bell, Susan K. (1997). Classification of Mammals Above the Species Level. New York: Columbia University Press. ISBN 978-0-231-11012-9. Retrieved 16 March 2015.
  8. J. J. Flynn (1998.) "Early Cenozoic Carnivora ("Miacoidea")." In C. M. Janis, K. M. Scott, and L. L. Jacobs (eds.) "Evolution of Tertiary Mammals of North America. Volume 1: Terrestrial Carnivores, Ungulates, and Ungulatelike Mammals." Cambridge University Press, Cambridge. ISBN 0-521-35519-2
  9. Spaulding, Michelle; Flynn, John J.; Stucky, Richard K. (2010). "A new basal Carnivoramorphan (Mammalia) from the 'Bridger B' (Black's Fork member, Bridger Formation, Bridgerian Nalma, middle Eocene) of Wyoming, USA". Palaeontology. 53 (4): 815–832. Bibcode:2010Palgy..53..815S. doi:10.1111/j.1475-4983.2010.00963.x. S2CID 128700977.
  10. Flynn, John J.; Finarelli, John A.; Spaulding, Michelle (2010). "Phylogeny of the Carnivora and Carnivoramorpha, and the use of the fossil record to enhance understanding of evolutionary transformations". In Goswami, Anjali; Friscia, Anthony (eds.). Carnivoran evolution. New views on phylogeny, form and function. Cambridge University Press. pp. 25–63. doi:10.1017/CBO9781139193436.003. ISBN 9781139193436.
  11. Solé, Floréal; Smith, Richard; Coillot, Tiphaine; de Bast, Eric; Smith, Thierry (2014). "Dental and tarsal anatomy of Miacis latouri and a phylogenetic analysis of the earliest carnivoraforms (Mammalia, Carnivoramorpha)". Journal of Vertebrate Paleontology. 34 (1): 1–21. Bibcode:2014JVPal..34....1S. doi:10.1080/02724634.2013.793195. ISSN 0272-4634. S2CID 86207013.
  12. Tomiya, S.; Zack, S. P.; Spaulding, M.; Flynn, J. J. (2021). "Carnivorous mammals from the middle Eocene Washakie Formation, Wyoming, USA, and their diversity trajectory in a post-warming world". Journal of Paleontology. 95 (Supplement S82): 1–115. Bibcode:2021JPal...95S...1T. doi:10.1017/jpa.2020.74. S2CID 232358160.
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