Mesohippus bairdi

Mesohippus bairdi

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
MesohippusPBDB
Diet
browserPBDB, for Equidae
Life habit
ground dwellingPBDB, for Equidae
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Eutheria

Time the record covers

At most 5.2 million years on record.

Every occurrence read is dated to somewhere between 37 Mya and 31.8 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Eocene — about 17 of 39 occurrencesEoceneOligocene — about 22 of 39 occurrencesOligocene37–37 Mya — about 0.7 occurrences37–37 Mya — about 1 occurrence37–36 Mya — about 1 occurrence36–36 Mya — about 1 occurrence36–36 Mya — about 1 occurrence36–36 Mya — about 1 occurrence36–36 Mya — about 1 occurrence36–35 Mya — about 1 occurrence35–35 Mya — about 1 occurrence35–35 Mya — about 1 occurrence35–35 Mya — about 1 occurrence35–35 Mya — about 1 occurrence35–34 Mya — about 1 occurrence34–34 Mya — about 1 occurrence34–34 Mya — about 1 occurrence34–34 Mya — about 2 occurrences34–34 Mya — about 2 occurrences34–33 Mya — about 2 occurrences33–33 Mya — about 2 occurrences33–33 Mya — about 2 occurrences33–33 Mya — about 2 occurrences33–33 Mya — about 2 occurrences33–32 Mya — about 2 occurrences32–32 Mya — about 2 occurrences32–32 Mya — about 2 occurrences32–32 Mya — about 1 occurrence37.5 Mya31.3 Mya

39 occurrences of Mesohippus bairdi 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

39 occurrences

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

6 formations

Brule — 42.80°N, 103.10°WBrule — 43.30°N, 102.50°WBrule — 46.90°N, 102.80°WBrule — 43.90°N, 102.40°WBrule — 43.20°N, 103.20°WBrule — 42.00°N, 104.20°WBrule — 43.85°N, 102.50°WBrule — 43.60°N, 102.45°WChadron — 43.60°N, 102.45°WChadron — 42.80°N, 103.10°WChadron — 43.30°N, 102.50°WChadron — 42.00°N, 104.20°WRenova — 45.20°N, 112.00°WRenova — 46.00°N, 112.00°WCypress Hills — 49.70°N, 109.00°WCypress Hills — 49.60°N, 108.80°WWhite River — 40.80°N, 103.10°WJohn Day — 44.90°N, 120.20°W

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The named rock units Mesohippus bairdi has been recovered from, largest first. Drawn where the rock is now, not where it formed. 9 occurrences have no formation on record, which is common for older literature.

Mesohippus bairdi and its relatives

Oligocene

Where Mesohippus bairdi and its relatives were recorded in the Oligocene.

Found in the same rock

231 taxa

The Paleobiology Database records 38 sites for Mesohippus bairdi, 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

18 references

Each of the 39 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. 6 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 Mesohippus bairdi

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
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 itMesohippus through timeFormations of the OligoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Leidy 1850)