Megahippus

Megahippus is an extinct genus of large Anchitheriine horses found throughout the southern portion of the United States during the middle Miocene. The animal represents one of the latest low-crowned horses, overlapping in time with more derived high-crowned horses.

Megahippus

Uncredited · CC0 · 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
AnchitheriinaePBDB
Diet
browserPBDB
Life habit
ground dwellingPBDB, for Equidae
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Eutheria

Time the record covers

At least 870 thousand years on record.

The record covers at least 12.5 Mya to 11.63 Mya. No occurrence read is dated outside 23.04 Mya to 5.333 Mya.

Oligocene — about 0 of 34 occurrencesMiocene — about 34 of 34 occurrencesMiocenePliocene — about 0 of 34 occurrences24–23 Mya — about 0.0 occurrences23–22 Mya — about 0.0 occurrences22–22 Mya — about 0.0 occurrences22–21 Mya — about 0.0 occurrences21–20 Mya — about 0.0 occurrences20–20 Mya — about 0.0 occurrences20–19 Mya — about 0.0 occurrences19–19 Mya — about 0.0 occurrences19–18 Mya — about 0.0 occurrences18–17 Mya — about 0.0 occurrences17–17 Mya — about 0.0 occurrences17–16 Mya — about 1 occurrence16–15 Mya — about 3 occurrences15–15 Mya — about 3 occurrences15–14 Mya — about 3 occurrences14–14 Mya — about 3 occurrences14–13 Mya — about 3 occurrences13–12 Mya — about 3 occurrences12–12 Mya — about 2 occurrences12–11 Mya — about 2 occurrences11–10 Mya — about 2 occurrences10–9.8 Mya — about 2 occurrences9.8–9.2 Mya — about 2 occurrences9.2–8.6 Mya — about 0.3 occurrences8.6–8.0 Mya — about 0.3 occurrences8.0–7.3 Mya — about 0.3 occurrences7.3–6.7 Mya — about 0.2 occurrences6.7–6.1 Mya — about 0.1 occurrences6.1–5.5 Mya — about 0.1 occurrences5.5–4.8 Mya — about 0.0 occurrences12.5 Mya – 11.63 Mya23.5 Mya4.8 Mya

34 occurrences of Megahippus 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

34 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

12 formations

Valentine — 42.70°N, 100.00°WValentine — 42.49°N, 98.11°WValentine — 42.80°N, 100.80°WValentine — 42.80°N, 99.70°WValentine — 42.78°N, 100.03°WValentine — 42.60°N, 98.00°WBarstow — 34.80°N, 117.00°WBarstow — 35.05°N, 117.07°WBarstow — 35.06°N, 117.11°WNS Caliente — 34.30°N, 119.00°WTesuque — 35.50°N, 106.20°WPawnee Creek — 40.80°N, 104.20°WAsh Hollow — 42.80°N, 100.80°WPeace River — 27.90°N, 81.80°WEsmeralda — 38.25°N, 117.90°WBrowns Park — 40.60°N, 108.10°WMR Caliente — 34.30°N, 119.00°WDove Spring — 35.30°N, 118.50°Wreferred Chamita — 36.50°N, 107.00°W

Loading coastlines…

The named rock units Megahippus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 4 occurrences have no formation on record, which is common for older literature.

Megahippus and its relatives

Miocene

Where Megahippus and its relatives were recorded in the Miocene.

Found in the same rock

385 taxa

The Paleobiology Database records 34 sites for Megahippus, 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

Each of the 34 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 Megahippus

Credit
nobody named on the record
Licence
CC0
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 was not reached for this taxon, so this list is what the others held rather than everything there is.

The description on this site

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 itAnchitheriinae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. McGrew 1938