Odocoileus hemionus
The mule deer is a deer indigenous to western North America; it is named for its ears, which are large like those of the mule. Two subspecies of mule deer are grouped into the black-tailed deer.

Oregon Department of Fish & Wildlife · CC BY-SA 2.0 · 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- Also called
- mule deerPBDB
- Sits inside
- OdocoileusPBDB
- Diet
- browserPBDB, for Odocoileus
- Life habit
- ground dwellingPBDB, for Cervidae
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Artiodactyla
Time the record covers
At least 198 thousand years on record.
The record covers at least 210 ka to 11.7 ka. No occurrence read is dated outside 2.58 Mya to 0 Mya.
21 occurrences of Odocoileus hemionus on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group. 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
21 occurrences- Pleistocene90%
- Holocene10%
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
3 formations
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The named rock units Odocoileus hemionus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 16 occurrences have no formation on record, which is common for older literature.
Odocoileus hemionus and its relatives
PleistoceneWhere Odocoileus hemionus and its relatives were recorded in the Pleistocene.
Found in the same rock
364 taxa- Equus9 sites
- Camelops8 sites
- Canis latrans8 sites
- Antilocapra americana6 sites
- Neotoma cinerea6 sites
- Ovis canadensis6 sites
- Peromyscus maniculatus6 sites
- Puma concolor6 sites
- Vulpes vulpes6 sites
- Lepus5 sites
- Marmota flaviventris5 sites
- Megascapheus bottae5 sites
- Neotoma5 sites
- Ochotona princeps5 sites
- Aechmophorus occidentalis4 sites
- Bison4 sites
- Lemmiscus curtatus4 sites
- Lynx rufus4 sites
- Megalonyx4 sites
- Microtus4 sites
- Microtus longicaudus4 sites
- Osteichthyes4 sites
- Peromyscus4 sites
- Serpentes4 sites
The Paleobiology Database records 21 sites for Odocoileus hemionus, 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
16 references- A catalogue of late Quaternary Vertebrates from California: Part Two, Mammals3
- Pleistocene vertebrates of the Los Angeles basin and vicinity:(exclusive of Rancho La Brea)3
- Late Pleistocene vertebrates from Gunnison County, Colorado2
- Radiocarbon dates from the mammal fauna of Crystal Caverns, El Dorado County, California1
- Late Pleistocene (Rancholabrean) mammals from fissure deposits in the Jurassic Todilto Formation, White Mesa mine, Sandoval County, north-central New Mexico1
- Synonymies and reidentifications of North American fossil mammals1
- Late Pleistocene mountain goats (Oreamnos americanus) from Vancouver Island: biogeographic implications1
- Mid-Wisconsinan vertebrates and their environment from January Cave, Alberta, Canada1
- Quaternary paleontology and paleocology of Crystal Ball Cave, Millard County, Utah: with emphasis on mammals and description of a new species of fossil skunk1
- The Sangamon interglacial vertebrate fauna from Rancho la Brisca, Sonora, Mexico1
- Late Pleistocene and early Recent mammals from Fowlkes Cave, southern Culberson County, Texas1
- New Quaternary mammal localities in the upper Clark Fork River valley, western Montana1
Each of the 21 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. 4 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 content2
Picture of Odocoileus hemionus
- Source
- Wikipedia/Commons
- Credit
- Oregon Department of Fish & Wildlife
- Licence
- CC BY-SA 2.0
- Commercial use
- the licence allows it
3D model
- Source
- Sketchfab
- 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.
The description on this site
- Source
- Wikipedia, “Mule deer”
- 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 itOdocoileus through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Rafinesque 1817)