| 词条 | Borophagus dudleyi |
| 释义 |
| name = Borophagus dudleyi[1] | fossil_range = Late Miocene to Early Pliocene {{fossilrange|10.3|4.9}} | image = | image_caption = | genus = Borophagus | species = dudleyi | authority = White, 1941 | synonyms = }}Borophagus dudleyi ("devouring glutton") is an extinct species of the genus Borophagus of the subfamily Borophaginae, a group of canids endemic to North America from the late Hemphillian of the Miocene epoch (10.3 Mya) through the Pliocene epoch (4.9 Mya). Borophagus dudleyi existed for approximately {{Mya|10.3-4.9|million years}}.[2] OverviewBorophagus dudleyi was originally named Pliogulo dudleyi by T.E. White in 1941.[3] Borophagus dudleyi, like other Borophaginae, are loosely known as "bone-crushing" or "hyena-like" dogs. Though not the most massive borophagine by size or weight, it had a more highly evolved capacity to crunch bone than earlier, larger genera such as Epicyon, which seems to be an evolutionary trend of the group (Turner, 2004). During the Pliocene epoch, Borophagus began being displaced by Canis genera such as Canis edwardii and later by Canis dirus. Early species of Borophagus were placed in the genus Osteoborus until recently, but the genera are now considered synonyms.[1] Borophagus parvus possibly led a hyena-like lifestyle scavenging carcasses of recently dead animals. TaxonomyBorophagus dudleyi was recombined as Cynogulo dudleyi by Kretzoi in 1968. It was recombined again as Osteoborus dudleyi by Webb in 1969 and Munthe in 1998. The animal was then synonymized subjectively with Borophagus crassapineatus by Richey in 1979. In 1987, Richard H. Tedford returned its original name and Xiaoming Wang along with Richard H. Tedford and Beryl E. Taylor concurred in a 1999 examination. MorphologyTypical features of this genus are a bulging forehead and powerful jaws; it was probably a scavenger.[4] Its crushing premolar teeth and strong jaw muscles would have been used to crack open bone, much like the hyena of the Old World. The adult animal is estimated to have been about 80 cm in length, similar to a coyote, although it was much more powerfully built.[5] Fossil distributionBorophagus dudleyi fossil specimens are exclusive to a coastal area of North Carolina. Sister generaCarpocyon, Epicyon, Paratomarctus and Protepicyon. See also
References1. ^1 {{cite journal| last = Wang| first = Xiaoming|author2=Richard Tedford|author3=Beryl Taylor| title = Phylogenetic systematics of the Borophaginae| journal = Bulletin of the American Museum of Natural History| volume = 243| date = 1999-11-17| url = http://www.nhm.org/expeditions/rrc/wang/documents/Wangetal1999borophaginemonographpart1.pdf| accessdate = 2007-07-08 |archiveurl = https://web.archive.org/web/20070320023028/http://www.nhm.org/expeditions/rrc/wang/documents/Wangetal1999borophaginemonographpart1.pdf |archivedate = 2007-03-20}} 2. ^PaleoBiology Database: Borophagus dudleyi, basic info 3. ^T. E. White. 1941. Addition to the fauna of the Florida Pliocene. Proceedings of the New England Zoological Club 67-70 4. ^{{cite book |last=Lambert|first=David|year=1985 |title= The Field Guide to Prehistoric Life|publisher= Facts on File|location=New York|isbn= 0-8160-1125-7|page= 163}} 5. ^{{cite book |editor=Palmer, D.|year=1999 |title= The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals|publisher= Marshall Editions|location=London|isbn= 1-84028-152-9|page= 220}}
Further reading
5 : Borophagines|Miocene canids|Pliocene carnivorans|Piacenzian extinctions|Prehistoric mammals of North America |
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