Protolabis
Protolabis is an extinct genus of camelid endemic to North America. It lived from the Early to Late Miocene 20.4—5.3 mya, existing for approximately 15 million years. Fossil distribution is widespread from Nicaragua, Central America to Montana and throughout the western U.S.

R. Bruce Horsfall · Public Domain · via Wikipedia/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.
On record
Recorded, not inferred- Sits inside
- ProtolabinaePBDB
- Diet
- browser, browserPBDB, for Camelidae
- Life habit
- ground dwellingPBDB, for Camelidae
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Artiodactyla
Time the record covers
At least 9.1 million years on record.
The record covers at least 18.5 Mya to 9.4 Mya. No occurrence read is dated outside 29.5 Mya to 4.7 Mya.
89 occurrences of Protolabis on record, most of them in the Miocene. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.
When
89 occurrencesThese are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.
Found in
24 formations
- Milk Creek Formation15
- Valentine Formation · Ogallala Group9
- Arikaree Formation8
- Goliad Formation6
- Popotosa Formation5
- Ash Hollow Formation4
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The named rock units Protolabis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 13 occurrences have no formation on record, which is common for older literature.
Protolabis and its relatives
MioceneWhere Protolabis and its relatives were recorded in the Miocene.
Found in the same rock
563 taxa- Aepycamelus16 sites
- Gomphotherium15 sites
- Procamelus grandis14 sites
- Archaeolaginae13 sites
- Aphelops megalodus11 sites
- Equinae11 sites
- Leptocyon vafer11 sites
- Mustelidae11 sites
- Mylagaulidae11 sites
- Teleoceras11 sites
- Teleoceras major11 sites
- Aelurodon ferox10 sites
- Borophaginae10 sites
- Ustatochoerus medius10 sites
- Longirostromeryx wellsi9 sites
- Michenia9 sites
- Pliohippus9 sites
- Untermannerix copiosus9 sites
- Calippus placidus8 sites
- Calippus regulus8 sites
- Eucastor8 sites
- Eucastor tortus8 sites
- Hipparionini8 sites
- Hippotherium8 sites
The Paleobiology Database records 82 sites for Protolabis, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.
This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.
Entered from
38 references- A generic revision of the Protolabidini (Mammalia, Camelidae), with a description of two new protolabidines17
- Miocene mammals of the Split Rock area, Granite Mountains basin, central Wyoming8
- Vertebrate biostratigraphy of the Ogallala Group in Nebraska6
- Synonymies and reidentifications of North American fossil mammals5
- Geology and Paleontology of the Santa Fe Group, Southwestern Albuquerque Basin, Valencia County, New Mexico5
- The Burge and Minnechaduza Clarendonian Mammalian Faunas of North-Central Nebraska5
- Road Log Neogene geology of the Española Basin, New Mexico4
- Stratigraphy Of The Middle Miocene Bopesta Formation, Southern Sierra Nevada, California4
- The Lapara Creek Fauna: Early Clarendonian of south Texas, USA2
- The geology and paleontology of Ashfall Fossil Beds, a late Miocene (Clarendonian) mass-death assemblage, Antelope County and adjacent Knox County, Nebraska, USA2
- The Hottell Ranch rhino quarries (basal Ogallala: medial Barstovian), Banner County, Nebraska. Part I: Geologic setting, faunal lists, lower vertebrates2
- Late Cenozoic Vertebrates from Honduras and El Salvador2
Each of the 89 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. 26 further references are not listed. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1
Picture of Protolabis
- Source
- Wikipedia/Commons
- Credit
- R. Bruce Horsfall
- Licence
- Public Domain
- Commercial use
- the licence allows it
No 3D scan of Protolabis was found in MorphoSource and Sketchfab.
Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Source
- Wikipedia, “Protolabis”
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itProtolabinae through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Cope 1876