Hypisodus

Hypisodus is an extinct genus of hoofed mammal belonging to the family Hypertragulidae, within the order Artiodactyla, endemic to North America during the Eocene through Oligocene, living 37.2–26.3 Ma, existing for approximately 10.9 million years.

Hypisodus

Geekgecko · 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
HypisodontidaePBDB
Diet
grazer, browserPBDB, for Artiodactyla
Life habit
ground dwellingPBDB, for Artiodactyla
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Artiodactyla

Time the record covers

At least 4.4 million years on record.

The record covers at least 33.9 Mya to 29.5 Mya. No occurrence read is dated outside 37 Mya to 24.7 Mya.

Eocene — about 15 of 37 occurrencesEoceneOligocene — about 22 of 37 occurrencesOligocene37–37 Mya — about 2 occurrences37–36 Mya — about 2 occurrences36–36 Mya — about 2 occurrences36–35 Mya — about 2 occurrences35–35 Mya — about 2 occurrences35–34 Mya — about 2 occurrences34–34 Mya — about 2 occurrences34–34 Mya — about 3 occurrences34–33 Mya — about 3 occurrences33–33 Mya — about 3 occurrences33–32 Mya — about 3 occurrences32–32 Mya — about 3 occurrences32–31 Mya — about 1 occurrence31–31 Mya — about 1 occurrence31–30 Mya — about 1 occurrence30–30 Mya — about 1 occurrence30–30 Mya — about 1 occurrence30–29 Mya — about 0.1 occurrences29–29 Mya — about 0.1 occurrences29–28 Mya — about 0.1 occurrences28–28 Mya — about 0.1 occurrences28–27 Mya — about 0.1 occurrences27–27 Mya — about 0.1 occurrences27–26 Mya — about 0.1 occurrences26–26 Mya — about 0.1 occurrences26–26 Mya — about 0.1 occurrences26–25 Mya — about 0.1 occurrences25–25 Mya — about 0.1 occurrences33.9 Mya29.5 Mya37.5 Mya24.2 Mya

37 occurrences of Hypisodus 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

37 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 — 40.80°N, 103.10°WBrule — 43.90°N, 102.40°WBrule — 42.40°N, 103.80°WBrule — 42.00°N, 104.20°WBrule — 43.20°N, 103.20°WBrule — 41.83°N, 103.72°WBrule — 41.70°N, 103.10°WWhite River — 43.20°N, 107.10°WWhite River — 40.80°N, 103.10°WChadron — 42.40°N, 103.80°WChadron — 42.80°N, 103.40°WChadron — 42.75°N, 103.65°W"Oreodon Beds" — 42.40°N, 103.80°WGering — 41.70°N, 103.10°WDunbar Creek — 45.70°N, 111.00°W

Loading coastlines…

The named rock units Hypisodus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 occurrences have no formation on record, which is common for older literature.

Hypisodus and its relatives

Oligocene

Where Hypisodus and its relatives were recorded in the Oligocene.

Found in the same rock

403 taxa

The Paleobiology Database records 36 sites for Hypisodus, 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

19 references

Each of the 37 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. 7 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 Hypisodus

Credit
Geekgecko
Licence
CC0
Commercial use
the licence allows it

Laser scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Hypisodus minimus · AMNH:FM:6591

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 itHypisodontidae through timeFormations of the OligoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Cope 1873