Stylinodon

{{Short description|Genus of extinct mammal}}

{{Automatic taxobox

|fossil_range = {{fossil_range|53.4|39.7}} early to middle Eocene

|image = Stylinodon_mirusDB24.jpg

|image_caption = life restoration of Stylinodon mirus

|image2 = Gfp-stylinodon.jpg

|image2_caption = skull of Stylinodon mirus

|display_parents = 2

|parent_authority = Marsh, 1875Marsh, O. C. (1875.) [https://www.nature.com/articles/011368b0 "New Order of Eocene Mammals."] American Journal of Science 9:221

|taxon = Stylinodon

|authority = Marsh, 1874O. C. Marsh (1874.) [https://ajsonline.org/article/64928 "Notice of new Tertiary mammals. III."] American Journal of Science, series 3 7(41):531-534

|type_species = †Stylinodon mirus

|type_species_authority = Marsh, 1874

|synonyms =

{{collapsible list |bullets=true |title=synonyms of species:

|{{collapsible list |bullets=true |title=S. mirus:

|Calamodon cylindrifer {{small|(Cope, 1881)}}{{cite journal|author=E. D. Cope |title= "On the Vertebrata of the Wind River Eocene beds of Wyoming."|url=https://babel.hathitrust.org/cgi/pt?id=hvd.32044107354144&view=1up&seq=5&skin=2021 |journal=Bulletin of the United States Geological and Geographical Survey|date=1881|volume=6|issue=1|pages=183–202}}

|Stylinodon cylindrifer {{small|(Wortman, 1896)}}Wortman, J. L. (1896.) [https://digitallibrary.amnh.org/items/4b70829e-058c-4711-9a43-2c01c9737dbd "The Ganodonta and their relationship to the Edentata."] Bulletin of the AMNH; vol. 9, article 6

|Stylinodon inexplicatus {{small|(Schoch & Lucas, 1981)}}{{cite journal |last1=Schoch |first1=R. M. |last2=Lucas |first2=S. G. |title="The systematics of Stylinodon, a middle to late Eocene taeniodont (Mammalia) from western North America." |journal=J. Vertebr. Paleontol. |date=1981 |volume=1 |issue= |pages=175–83 |doi=10.1080/02724634.1981.10011890 |jstor=4522849}}

}} }}

|synonyms_ref = J. Alroy (2002.) "Synonymies and reidentifications of North American fossil mammals."

}}

Stylinodon ("tooth with pilar-like fibers"){{Cite book |last=Palmer |first=Theodore Sherman |title=Index Generum Mammalium: A List of the Genera and Families of Mammals |url=https://www.biodiversitylibrary.org/item/88553#page/9/mode/1up |date=1904 |publisher=U.S. Government Printing Office |language=en}}

is an extinct genus of taeniodonts from extinct tribe Stylinodontini within subfamily Stylinodontinae and family Stylinodontidae, that lived in North America from early to middle Eocene.Schoch, Robert M. (1986.) [https://elischolar.library.yale.edu/peabody_museum_natural_history_bulletin/42/ "Systematics, functional morphology and macroevolution of the extinct mammalian order Taeniodonta."] Bulletin of the Peabody Museum of Natural History, (42).{{cite book |last1=McKenna |first1=Malcolm C. |last2=Bell |first2=Susan K. |title=Classification of Mammals Above the Species Level |url=https://books.google.com/books?id=OLYifwU8bqQC&pg=PP9 |access-date=16 March 2015 |year=1997 |publisher=Columbia University Press |location=New York |isbn=978-0-231-11012-9}}S. G. Lucas, R. M. Schoch, and T. E. Williamson (1998.) [https://www.researchgate.net/publication/233904689_Taeniodonta "Taeniodonta".] In C. M. Janis, K. M. Scott, and L. L. Jacobs (eds.), [https://books.google.com/books?id=I-RgojcDyWYC "Evolution of Tertiary Mammals of North America, Volume 1: Terrestrial Carnivores, Ungulates, and Ungulate like Mammals"], Cambridge University Press, 703 pages{{Cite journal |last1=Williamson |first1=T. E. |last2=Brusatte |first2=S. L. |editor1-last=Viriot |editor1-first=Laurent |title=New Specimens of the Rare Taeniodont Wortmania (Mammalia: Eutheria) from the San Juan Basin of New Mexico and Comments on the Phylogeny and Functional Morphology of "Archaic" Mammals |journal=PLOS ONE |date=2013 |volume=8 |issue=9 |pages=e75886 |doi=10.1371/journal.pone.0075886 |pmid=24098738 |pmc=3786969 |bibcode=2013PLoSO...875886W |doi-access=free}}

With a weight between {{cvt|54.9|kg}} and {{cvt|109|kg}}, and length of {{cvt|1.30|m}}, it had similar size to a pig. The skull suggests it had a blunt face, and a very short snout. Its canines had developed into huge, incisor-like root-less teeth. Stylinodon's molars were covered in enamel and continued growing throughout its life. Most likely, it fed on rough roots and tubers.{{cite book |editor=Palmer, D. |year=1999 |title=The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals |publisher=Marshall Editions |location=London |page=237 |isbn=1-84028-152-9}}