Hyracodon

Hyracodon is an extinct genus of perissodactyl mammal from the White River Formation.

Hyracodon

Jonathan Chen · CC BY-SA 4.0 · 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
HyracodontidaePBDB
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 10 million years on record.

The record covers at least 39.7 Mya to 29.5 Mya. No occurrence read is dated outside 45.9 Mya to 18.5 Mya.

Eocene — about 70 of 127 occurrencesEoceneOligocene — about 57 of 127 occurrencesOligoceneMiocene — about 1 of 127 occurrencesMiocene46–45 Mya — about 0.1 occurrences45–45 Mya — about 0.3 occurrences45–44 Mya — about 0.3 occurrences44–43 Mya — about 0.3 occurrences43–42 Mya — about 0.3 occurrences42–41 Mya — about 0.3 occurrences41–40 Mya — about 0.3 occurrences40–39 Mya — about 5 occurrences39–38 Mya — about 5 occurrences38–37 Mya — about 8 occurrences37–36 Mya — about 16 occurrences36–35 Mya — about 16 occurrences35–34 Mya — about 16 occurrences34–33 Mya — about 15 occurrences33–32 Mya — about 15 occurrences32–31 Mya — about 11 occurrences31–30 Mya — about 8 occurrences30–29 Mya — about 7 occurrences29–28 Mya — about 1 occurrence28–27 Mya — about 1 occurrence27–27 Mya — about 0.5 occurrences27–26 Mya — about 0.4 occurrences26–25 Mya — about 0.3 occurrences25–24 Mya — about 0.2 occurrences24–23 Mya — about 0.2 occurrences23–22 Mya — about 0.2 occurrences22–21 Mya — about 0.2 occurrences21–20 Mya — about 0.2 occurrences20–19 Mya — about 0.2 occurrences19–18 Mya — about 0.1 occurrences39.7 Mya29.5 Mya46.4 Mya18 Mya

127 occurrences of Hyracodon 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

127 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

19 formations

Brule — 42.80°N, 103.10°WBrule — 40.80°N, 103.10°WBrule — 43.30°N, 102.50°WBrule — 43.90°N, 102.40°WBrule — 43.20°N, 103.20°WBrule — 43.85°N, 102.50°WBrule — 42.40°N, 103.80°WBrule — 43.60°N, 102.45°WBrule — 43.50°N, 101.90°WBrule — 46.40°N, 103.30°WBrule — 41.80°N, 103.80°WBrule — 40.74°N, 103.19°WChadron — 43.60°N, 102.45°WChadron — 42.40°N, 103.80°WChadron — 42.80°N, 103.10°WChadron — 42.80°N, 103.40°WChadron — 45.47°N, 112.62°WChadron — 43.30°N, 102.50°WChadron — 42.00°N, 104.20°WWhite River — 43.20°N, 108.20°WWhite River — 43.20°N, 107.10°WWhite River — 40.80°N, 103.10°WChambers Tuff — 29.90°N, 104.20°WRenova — 45.00°N, 112.80°WRenova — 46.00°N, 112.00°WRenova — 45.90°N, 112.25°WDuchesne River — 40.20°N, 109.90°WDuchesne River — 40.10°N, 110.20°WBembridge Limestone — 50.67°N, 1.53°WCypress Hills — 50.00°N, 107.90°WCypress Hills — 49.57°N, 109.88°WDevil's Graveyard — 29.20°N, 103.20°WDevil's Graveyard — 29.90°N, 104.20°WSharps — 43.30°N, 102.50°WCapote Mountain Tuff — 29.90°N, 104.20°WPalm Peak — 33.10°N, 107.30°WPreitos — 29.80°N, 104.50°WSage Creek — 45.00°N, 112.80°WCook Ranch — 45.00°N, 112.80°WDunbar Creek — 45.70°N, 111.00°WCoja — 40.27°N, 7.99°WClinchfield — 32.91°N, 83.36°WUinta — 40.20°N, 109.90°W

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The named rock units Hyracodon has been recovered from, largest first. Drawn where the rock is now, not where it formed. 40 occurrences have no formation on record, which is common for older literature.

Hyracodon and its relatives

Eocene

Where Hyracodon and its relatives were recorded in the Eocene.

Found in the same rock

818 taxa

The Paleobiology Database records 120 sites for Hyracodon, 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

54 references

Each of the 127 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. 42 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 Hyracodon

Credit
Jonathan Chen
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

Laser scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Hyracodon nebraskensis · FMNH:P:12011

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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 itHyracodontidae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Leidy 1856)