Peraceras
Peraceras is an extinct genus of rhinocerotids endemic to North America. It lived during the Miocene, living from 16.0 to 10.3 mya, existing for approximately 6 million years.

American Museum of Natural History.; Cope, E. D.; Geological Survey (U.S.); Matthew, William Diller · 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
- AceratheriinaePBDB
- Diet
- browserPBDB
- Life habit
- ground dwellingPBDB
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At least 3.8 million years on record.
The record covers at least 16.3 Mya to 12.5 Mya. No occurrence read is dated outside 23.04 Mya to 5.333 Mya.
76 occurrences of Peraceras 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
76 occurrences- Miocene100%
These 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
17 formations
- Valentine Formation · Ogallala Group16
- Fleming Formation8
- Tesuque Formation · lower Santa Fe Group8
- Zia Formation4
- Dove Spring Formation3
- Olcott Formation2
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The named rock units Peraceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 24 occurrences have no formation on record, which is common for older literature.
Peraceras and its relatives
MioceneWhere Peraceras and its relatives were recorded in the Miocene.
Found in the same rock
569 taxa- Aphelops megalodus20 sites
- Leptocyon vafer19 sites
- Aelurodon ferox16 sites
- Hipparionini15 sites
- Paratomarctus temerarius15 sites
- Teleoceras meridianum15 sites
- Teleoceras13 sites
- Metechinus amplior12 sites
- Camelidae11 sites
- Copemys longidens11 sites
- Cupidinimus nebraskensis11 sites
- Eucastor tortus11 sites
- Hypohippus osborni11 sites
- Mylagaulidae11 sites
- Teleoceras medicornutum11 sites
- Untermannerix copiosus11 sites
- Archaeolaginae10 sites
- Hypolagus parviplicatus10 sites
- Marmotini10 sites
- Merychippus insignis10 sites
- Parahippus cognatus10 sites
- Stirtonhyus xiphodonticus10 sites
- Amphicyonidae9 sites
- Domninoides valentinensis9 sites
The Paleobiology Database records 70 sites for Peraceras, 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
19 references- The Evolution of North American Rhinoceroses27
- Miocene rhinoceroses from the Texas Gulf Coastal Plain15
- Synonymies and reidentifications of North American fossil mammals10
- The Hottell Ranch rhino quarries (basal Ogallala: medial Barstovian), Banner County, Nebraska. Part I: Geologic setting, faunal lists, lower vertebrates5
- Vertebrate biostratigraphy of the Ogallala Group in Nebraska3
- Personal communication regarding rhinocerotid identifications2
- The lower Pliocene Ogallala-Wolf Creek vertebrate fauna, South Dakota2
- Two fossil accumulations in the Upper Barstow Formation, Mud Hills, Mojave Desert, CA1
- New Records of Middle and Late Miocene Perissodactyla and Artiodactyla From the Western Border of the San Joaquin Valley, Diablo Range, Fresno County, California1
- Avian and mammalian tracks from the middle Miocene (late Barstovian) Benavidez Ranch local fauna, Albuquerque basin, New Mexico1
- A New Pronotolagus (Lagomorpha: Leporidae) and Other Leporids from the Valentine Railway Quarries (Barstovian, Nebraska), and the Archaeolagine-Leporine Transition1
- Rodents (Mammalia) from the Barstovian (Miocene) Anceney local fauna, Montana1
Each of the 76 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. 7 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 Peraceras
- Source
- Wikipedia/Commons
- Credit
- American Museum of Natural History.; Cope, E. D.; Geological Survey (U.S.); Matthew, William Diller
- Licence
- Public Domain
- Commercial use
- the licence allows it
No 3D scan of Peraceras was found in Sketchfab.
Smithsonian Open Access and MorphoSource were 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, “Peraceras”
- 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 itAceratheriinae through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Cope 1880