| 词条 | Protolabis |
| 释义 |
| fossil_range = {{Fossil range|Oligocene|Early Miocene}} | image = Protolabis gracilis.jpg | image_caption = Protolabis gracilis | taxon = Protolabis | authority = Cope (1876) | subdivision_ranks = Species | subdivision =
}}Protolabis is an extinct genus of terrestrial herbivore in the family Camelidae, endemic to North America from the Oligocene through Miocene 30.8—10.3 mya, existing for approximately {{Mya|30.8-10.3|million years}}.[1] TaxonomyProtolabis was named by Cope (1876). It was assigned to Camelidae by Cope (1876) and Carroll (1988).[2]MorphologyBody massFour specimens were examined for estimated body mass by M. Mendoza, C. M. Janis, and P. Palmqvist. These specimens were estimated to weigh:
Fossil distributionFossil distribution is widespread from Nicaragua, Central America to Montana and throughout the western U.S. References1. ^PaleoBiology Database: Protolabis, basic info {{Taxonbar|from=Q7252012}}{{paleo-eventoedungulate-stub}}2. ^R. L. Carroll. 1988. Vertebrate Paleontology and Evolution. W. H. Freeman and Company, New York 1-698 3. ^M. Mendoza, C. M. Janis, and P. Palmqvist. 2006. Estimating the body mass of extinct ungulates: a study on the use of multiple regression. Journal of Zoology 270(1):90-101 7 : Prehistoric camelids|Oligocene even-toed ungulates|Miocene even-toed ungulates|Tortonian extinctions|Prehistoric mammals of North America|Rupelian genus first appearances|Prehistoric mammal genera |
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