| 词条 | Trigonictis macrodon |
| 释义 |
|name = Trigonictis macrodon |fossil_range = {{Fossil range|Miocene|Pliocene}} | image = | image_width = 250px | image_caption = | regnum = Animalia | phylum = Chordata | classis = Mammalia | ordo = Carnivora | familia = Mustelidae | subfamilia = Mustelinae |genus = †Trigonictis |genus_authority = Cope (1868) |type_species = †Trigonictis macrodon |subdivision_ranks = Species |subdivision = | synonyms = }} Trigonictis macrodon is an extinct genera and species of mammal related to a grison (genus Galictis) of North America living during the Pliocene through Pleistocene from ~4.1–1.6 Ma. (AEO).[1] existing for approximately {{Mya|4.1-1.6|million years}}. Morphology and dietTrigonictis is most closely related to the modern neotropical galictines, Sminthosinis and possibly Canimartes.[2] According to Kurtén and Anderson, Trigonictis macrodon was about the size of Martes pennanti, a fisher quickly moving and very capable of swimming. It was closely related to a group of galactine mustelids and reached the New World in the Middle Pliocene. Its diet was probably the rabbit, †Hypolagus, ground squirrels, and young beavers.[3]Fossil distributionFossil specimens were found from western Washington and Oregon in the northwest, south to Southern California and southeast Arizona, to Idaho, Nebraska, Oklahoma and four areas of Florida.[4] TaxonomyOriginally named Galera macrodon by Cope in 1868. It was recombined as Putorius macrodon by Wortman in 1883 and by and Cope and Wortman in 1884. It was recombined as Galictis macrodon by Nehring in 1886, Roger in 1896, Trouessart (1897), Nehring (1901), Hay in 1902, Trouessart in 1904 and Reig in 1957. Recombination occurred again as Grison macrodon by Hay in 1919, 1923, and 1930. By Schreuder in 1935. It again was recombined as Trigonictis macrodon by Ray et al. in 1981.[5] MorphologyBody mass was estimated on two specimens by Legendre and Roth (1988).[6]
References1. ^Alroy, John, PaleoDB collection 20308, March 26, 1995, De Soto Shell Pit, Caloosahatchee Formation, DeSoto County, Florida Primary reference: Y. Tomida. 1987. Small mammal fossils and correlation of continental deposits, Safford and Duncan basins, Arizona. National Science Museum 1-141.PaloDB{{Taxonbar|from=Q7841789}}2. ^[https://edocs.uis.edu/druez2/www/publications/HAFO%20Blancan%20mammals%20JIAS-rev.pdf Journal of the Idaho Academy of Science, Vol. 45, 2009.] 3. ^Kurten, Bjorn and Anderson, Elaine; Pleistocene mammals of North America, Columbia University Press, 1980. {{ISBN|0-231-03733-3}}. 4. ^John Alroy, February 18, 1993. PaleoDB collection 19651. 5. ^C. E. Ray, E. Anderson, and S. D. Webb. 1981. Brimleyana 5:1-36 6. ^S. Legendre and C. Roth. 1988. Correlation of carnassial tooth size and body weight in recent carnivores (Mammalia). Historical Biology 1(1):85-98 4 : Miocene mustelids|Mustelinae|Prehistoric mammals of North America|Pleistocene extinctions |
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