Hyrachyus

Hyrachyus is an extinct genus of perissodactyl mammal that lived in Eocene Europe, North America, and Asia. Its remains have also been found in Jamaica.

Hyrachyus

Ghedoghedo · CC BY-SA 3.0 · 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
Sits inside
HyrachyidaePBDB
Diet
browserPBDB, for Ceratomorpha
Life habit
ground dwellingPBDB, for Ceratomorpha
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Eutheria

Time the record covers

At least 13 million years on record.

The record covers at least 51.1 Mya to 37.71 Mya. No occurrence read is dated outside 56 Mya to 23.04 Mya.

Paleocene — about 0 of 188 occurrencesEocene — about 188 of 188 occurrencesEoceneOligocene — about 0 of 188 occurrencesOligoceneMiocene — about 0 of 188 occurrences57–56 Mya — about 0.8 occurrences56–54 Mya — about 2 occurrences54–53 Mya — about 2 occurrences53–52 Mya — about 2 occurrences52–51 Mya — about 6 occurrences51–50 Mya — about 29 occurrences50–49 Mya — about 29 occurrences49–48 Mya — about 31 occurrences48–46 Mya — about 33 occurrences46–45 Mya — about 17 occurrences45–44 Mya — about 6 occurrences44–43 Mya — about 6 occurrences43–42 Mya — about 6 occurrences42–41 Mya — about 6 occurrences41–40 Mya — about 5 occurrences40–38 Mya — about 4 occurrences38–37 Mya — about 3 occurrences37–36 Mya — about 0.4 occurrences36–35 Mya — about 0.4 occurrences35–34 Mya — about 0.4 occurrences34–33 Mya — about 0.0 occurrences33–32 Mya — about 0.0 occurrences32–30 Mya — about 0.0 occurrences30–29 Mya — about 0.0 occurrences29–28 Mya — about 0.0 occurrences28–27 Mya — about 0.0 occurrences27–26 Mya — about 0.0 occurrences26–25 Mya — about 0.0 occurrences25–24 Mya — about 0.0 occurrences24–22 Mya — about 0.0 occurrences51.1 Mya37.71 Mya56.7 Mya22.4 Mya

188 occurrences of Hyrachyus on record, most of them in the Eocene. 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

188 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

27 formations

Bridger — 41.70°N, 109.00°WBridger — 41.20°N, 110.50°WBridger — 42.70°N, 110.10°WBridger — 42.42°N, 109.35°WBridger — 41.80°N, 110.70°WBridger — 41.77°N, 110.33°WBridger — 42.37°N, 108.91°WBridger — 41.37°N, 109.82°WBridger — 41.28°N, 110.03°WBridger — 41.04°N, 110.23°WAycross — 43.20°N, 108.20°WAycross — 44.30°N, 109.00°WAycross — 43.70°N, 108.70°WWashakie — 41.70°N, 109.00°WWashakie — 41.35°N, 108.36°WWashakie — 41.10°N, 108.15°WWasatch — 41.70°N, 109.00°WWasatch — 42.70°N, 110.10°WWasatch — 41.75°N, 108.00°WWasatch — 41.80°N, 110.70°WWasatch — 42.37°N, 108.91°WGreen River — 41.20°N, 110.50°WGreen River — 41.80°N, 110.70°WGreen River — 42.70°N, 110.10°WGreen River — 42.45°N, 108.60°WGreen River — 40.20°N, 109.90°WWind River — 41.60°N, 105.80°WWind River — 43.20°N, 107.10°WWind River — 43.20°N, 107.33°WGuanzhuang — 36.18°N, 117.67°EGuanzhuang — 35.91°N, 117.78°EHuerfano — 37.80°N, 105.10°WTepee Trail — 43.70°N, 108.70°WUinta — 40.20°N, 109.90°WArshanto — 43.33°N, 111.76°EArshanto — 43.15°N, 111.58°EArshanto — 43.13°N, 111.59°E"Sheep Pass" — 39.00°N, 114.10°WEarnley — 50.76°N, 0.86°WLumeiyi — 24.76°N, 103.33°EChapelton — 18.33°N, 77.92°WCanoe — 29.46°N, 103.16°WClarno — 44.90°N, 120.20°WWillwood — 44.30°N, 109.00°WFowkes — 41.31°N, 111.02°WDelmar — 33.03°N, 117.29°W? Tepee Trail — 43.90°N, 110.80°WDevil's Graveyard — 29.20°N, 103.20°WEntrala — 41.67°N, 4.05°WYokawa — 34.89°N, 135.18°E

Loading coastlines…

The named rock units Hyrachyus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 further formations hold fewer occurrences each and are not listed. 33 occurrences have no formation on record, which is common for older literature.

Hyrachyus and its relatives

Eocene

Where Hyrachyus and its relatives were recorded in the Eocene.

Found in the same rock

876 taxa

The Paleobiology Database records 167 sites for Hyrachyus, 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

56 references

Each of the 188 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. 44 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 content3

Picture of Hyrachyus

Credit
Ghedoghedo
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

Laser scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Hyrachyus modestus · AMNH:FM:17436

3D model

Source
Sketchfab
Licence
CC Attribution-NonCommercial
Commercial use
the licence does not allow it

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 itHyrachyidae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Leidy 1871