Hyracodon nebraskensis

Uncredited · via Wikidata/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
- HyracodonPBDB
- Diet
- browserPBDB, for Hyracodontidae
- Life habit
- ground dwellingPBDB, for Hyracodontidae
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At least 2.1 million years on record.
The record covers at least 33.9 Mya to 31.8 Mya. No occurrence read is dated outside 37 Mya to 29.5 Mya.
27 occurrences of Hyracodon nebraskensis on record, most of them in the Oligocene. 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
27 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
3 formations
- Brule Formation · White River Group18
- Chadron Formation6
- Sharps Formation1
Loading coastlines…
The named rock units Hyracodon nebraskensis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.
Hyracodon nebraskensis and its relatives
OligoceneWhere Hyracodon nebraskensis and its relatives were recorded in the Oligocene.
Found in the same rock
198 taxa- Leptomeryx evansi13 sites
- Mesohippus bairdi11 sites
- Archaeotherium mortoni10 sites
- Hypertragulus calcaratus10 sites
- Palaeolagus haydeni10 sites
- Hesperocyon gregarius9 sites
- Ischyromys typus9 sites
- Leptomeryx9 sites
- Miniochoerus gracilis9 sites
- Daphoenus8 sites
- Hypisodus minimus8 sites
- Merycoidodon culbertsonii8 sites
- Paradjidaumo trilophus8 sites
- Poebrotherium wilsoni8 sites
- Megalagus turgidus7 sites
- Merycoidodon7 sites
- Adjidaumo minutus6 sites
- Brontotheriidae6 sites
- Eumys elegans6 sites
- Hesperocyon6 sites
- Miniochoerus affinis6 sites
- Peltosaurus6 sites
- Stylemys6 sites
- Dinictis5 sites
The Paleobiology Database records 27 sites for Hyracodon nebraskensis, 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
13 references- Preliminary biostratigraphy of the White River Group (Oligocene, Chadron and Brule formations) in the vicinity of Chadron, Nebraska5
- Correlation of the early Oligocene (Chadronian) in northwestern Nebraska5
- Hyracodontidae4
- Analysis of the Preservation of Community Structure in Assemblages of Fossil Mammals3
- Synonymies and reidentifications of North American fossil mammals2
- Geology and paleontology of the Oligocene Harris Ranch Badlands, southwestern South Dakota1
- Geology and uranium deposits, Shirley Basin area, Wyoming1
- Geology, paleoecology, and paleoclimatology of the Chadron Formation1
- Paleoecology of the Lower Nodular Zone, Brule Formation, in the Big Badlands of South Dakota1
- The Faunas of the Concretionary Zones of the Oreodon Beds, White River Oligocene1
- Hyracodons from the Big Badlands of South Dakota1
- Hitherto unpublished plates of Tertiary Mammalia and Permian Vertebrata1
Each of the 27 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. 1 further reference is 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 content2

Picture of Hyracodon nebraskensis
- Source
- Wikidata/Commons
- Credit
- nobody named on the record
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
3D model
- Source
- Sketchfab
- Credit
- UIPaleoRepository
- Licence
- CC Attribution
- Commercial use
- cannot be read from the licence given — check the record
Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itHyracodon through timeFormations of the OligoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Leidy 1850)