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Tremarctini
・ Tremarctos
・ Tremarctos floridanus
・ Tremataspis
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・ Trematocara caparti
・ Trematocara kufferathi
・ Trematocara macrostoma
・ Trematocara marginatum
・ Trematocara nigrifrons
・ Trematocara stigmaticum
・ Trematocara unimaculatum
・ Trematocara variabile
・ Trematocara zebra


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Tremarctini : ウィキペディア英語版
Tremarctini

The Tremarctini, the short-faced bears, are a tribe belonging to the family Ursidae (bears) endemic to North America and Europe during the Miocene to Holocene, living from about 13.6 Mya to the present.
Tremarctini was named by Frick (1926). Its type is ''Plionarctos edensis''. It was assigned to Ursidae by Frick (1926) and Carroll (1988); and to Tremarctinae by Hunt (1998).〔J. Chorn and R. S. Hoffman. 1978. Ailuropoda melanoleuca. Mammalian Species 110:1-6〕 This tribe includes four genera: ''Arctodus'', ''Arctotherium'', ''Plionarctos'', and ''Tremarctos'', with the latter containing both extinct and extant species (e.g., Florida cave bear and spectacled bear).
==Fossil distribution==
Sites and specimen ages:
*San Josecito Cave, Mexico ''(Tremarctos floridanus)'' 100,000—11,000 years ago
*Bear Tooth Slide, Brown County, Nebraska ''(Plionarctos)'' 13.6—4.9 Mya
*Taunton site, Adams County, Washington ''(Plionarctos harroldorum)'' 4.9—1.8 Mya
*Pipe Creek Sinkhole, Grant County, Indiana ''(Plionarctos edensis)'' 10.3—1.8 Mya

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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