| 词条 | Paratomarctus |
| 释义 |
| fossil_range = {{Fossil range|Miocene}} | display_parents = 4 | genus = Paratomarctus | parent_authority = Wang, 1999 | species = temerarius | authority = Wang, 1999 | range_map = Paratomarctus range.png | range_map_caption = Range of Paratomarctus based on fossil distribution }}Paratomarctus an extinct member of the Borophaginae, subtribe Borophagina, a terrestrial canine (bone-crushing dog) which inhabited most of North America from the Harrisonian stage to Early Barstovian stage of the Miocene epoch living 16.3—5.3 mya, existed for approximately {{Mya|16.3-5.3|million years}}.[1] Canid competitorsParatomarctus was one of the last of the Borophaginae and shared its North American habitat with other canidae: Borophagus (23.3—3.6 Mya), Epicyon (20.6—5.330 Ma), Carpocyon (20.4—3.9 Ma), Aelurodon (23.03—4.9 Ma), and the first emerging wolf, Canis lepophagus appearing 10.3 Ma. TaxonomyParatomarctus was named and assigned to Borophagina by Wang et al. (1999). It was recombined as Tephrocyon temerarius by Matthew and Cook (1909), Peterson (1910), Merriam (1913), Matthew (1918) and Merriam (1919); it was recombined as Tomarctus temerarius by Matthew (1924), Green (1948), Galbreath (1953), Downs (1956), Sutton (1977), Voorhies (1990) and Munthe (1998); it was recombined as Paratomarctus temerarius by Wang et al. (1999).[2][3][4]MorphologyTwo specimens were examined by Legendre and Roth for body mass. The first specimen was estimated to weigh {{Convert|12.9|kg|lb|abbr=on|sigfig=2}}. The second specimen was estimated to weigh {{Convert|12|kg|lb|abbr=on|sigfig=2}}.[5] Fossil rangeFossils were uncovered throughout most of the western United States. References1. ^Paleobiology Database: Paratomarctus basic info 2. ^J. C. Merriam. 1913. Notes on the canid genus Tephrocyon. University of California Publications, Bulletin of the Department of Geology 7(22):359-372 3. ^W. D. Matthew. 1924. Third contribution to the Snake Creek Fauna. Bulletin of the American Museum of Natural History 50:59-210 4. ^X. Wang, R. H. Tedford, and B. E. Taylor. 1999. Phylogenetic systematics of the Borophaginae (Carnivora: Canidae). Bulletin of the American Museum of Natural History 243:1-392 5. ^S. Legendre and C. Roth. 1988. Correlation of carnassial tooth size and body weight in recent carnivores (Mammalia). Historical Biology
4 : Borophagines|Miocene carnivorans|Miocene mammals of North America|Prehistoric mammal genera |
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