Hyracodon leidyanus

Hyracodon leidyanus

via iDigBio · CC0 · via iDigBio. 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
HyracodonPBDB
Diet
browserPBDB, for Hyracodontidae
Life habit
ground dwellingPBDB, for Hyracodontidae
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Eutheria

Time the record covers

At most 2.3 million years on record.

Every occurrence read is dated to somewhere between 31.8 Mya and 29.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Oligocene — about 7 of 7 occurrencesOligocene32–32 Mya — about 0.2 occurrences32–32 Mya — about 0.3 occurrences32–32 Mya — about 0.3 occurrences32–31 Mya — about 0.3 occurrences31–31 Mya — about 0.3 occurrences31–31 Mya — about 0.3 occurrences31–31 Mya — about 0.3 occurrences31–31 Mya — about 0.3 occurrences31–31 Mya — about 0.3 occurrences31–31 Mya — about 0.3 occurrences31–31 Mya — about 0.3 occurrences31–31 Mya — about 0.3 occurrences31–30 Mya — about 0.3 occurrences30–30 Mya — about 0.3 occurrences30–30 Mya — about 0.3 occurrences30–30 Mya — about 0.3 occurrences30–30 Mya — about 0.3 occurrences30–30 Mya — about 0.3 occurrences30–30 Mya — about 0.3 occurrences30–30 Mya — about 0.3 occurrences30–30 Mya — about 0.3 occurrences30–29 Mya — about 0.2 occurrences32.3 Mya29 Mya

7 occurrences of Hyracodon leidyanus 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

7 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

2 formations

Brule — 43.20°N, 103.20°WBrule — 43.30°N, 102.50°WWhite River — 40.80°N, 103.10°W

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The named rock units Hyracodon leidyanus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Hyracodon leidyanus and its relatives

Oligocene

Where Hyracodon leidyanus and its relatives were recorded in the Oligocene.

Found in the same rock

70 taxa

The Paleobiology Database records 7 sites for Hyracodon leidyanus, 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

2 references

Each of the 7 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. 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 content1

Picture of Hyracodon leidyanus

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Hyracodon leidyanus was found in MorphoSource and Sketchfab.

Smithsonian Open Access was 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 itHyracodon through timeFormations of the OligoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Troxell 1921