Duchesneodus

Duchesneodus is an extinct genus of horned brontothere that lived in North America during the Middle Eocene, in the late Uintan and Duchesnean land mammal ages. Several species of Duchesneodus have been recognized historically but only one species is seen as valid today, D. uintensis. Fossils of Duchesneodus were first discovered in the Duchesne River Formation in Utah. Fossils have also been found in the Galisteo Formation of New Mexico, and in the Vieja Area of Texas.

Duchesneodus

Robert Bruce Horsfall (1869–1948) · Public Domain · 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
BrontotheriitaPBDB
Diet
browserPBDB, for Brontotheriidae
Life habit
ground dwellingPBDB, for Brontotheriidae
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Eutheria

Time the record covers

At least 8.3 million years on record.

The record covers at least 48.07 Mya to 39.7 Mya. No occurrence read is dated outside 56 Mya to 37 Mya.

Paleocene — about 0 of 24 occurrencesEocene — about 24 of 24 occurrencesEocene57–56 Mya — about 0.0 occurrences56–55 Mya — about 0.1 occurrences55–55 Mya — about 0.1 occurrences55–54 Mya — about 0.1 occurrences54–53 Mya — about 0.1 occurrences53–53 Mya — about 0.1 occurrences53–52 Mya — about 0.1 occurrences52–51 Mya — about 0.1 occurrences51–51 Mya — about 0.1 occurrences51–50 Mya — about 0.1 occurrences50–49 Mya — about 0.1 occurrences49–49 Mya — about 0.1 occurrences49–48 Mya — about 0.1 occurrences47–46 Mya — about 0.0 occurrences46–45 Mya — about 0.3 occurrences45–45 Mya — about 0.3 occurrences45–44 Mya — about 0.3 occurrences44–43 Mya — about 0.3 occurrences43–43 Mya — about 0.3 occurrences43–42 Mya — about 0.3 occurrences42–41 Mya — about 0.3 occurrences41–41 Mya — about 0.3 occurrences41–40 Mya — about 0.3 occurrences40–39 Mya — about 4 occurrences39–39 Mya — about 5 occurrences39–38 Mya — about 5 occurrences38–37 Mya — about 5 occurrences37–37 Mya — about 1 occurrence48.07 Mya39.7 Mya56.5 Mya36.5 Mya

24 occurrences of Duchesneodus 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

24 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

8 formations

Sespe — 34.30°N, 119.00°WSantiago — 32.90°N, 117.10°WSantiago — 33.13°N, 117.31°WSantiago — 33.22°N, 117.33°WDevil's Graveyard — 29.20°N, 103.20°WGalisteo — 35.50°N, 106.20°WDuchesne River — 40.20°N, 109.90°WSlim Buttes — 45.62°N, 103.93°WChambers Tuff — 29.90°N, 104.20°WGreen River — 39.48°N, 111.50°W

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The named rock units Duchesneodus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Duchesneodus and its relatives

Eocene

Where Duchesneodus and its relatives were recorded in the Eocene.

Found in the same rock

116 taxa

The Paleobiology Database records 24 sites for Duchesneodus, 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

6 references

Each of the 24 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 content2

Picture of Duchesneodus

Credit
Robert Bruce Horsfall (1869–1948)
Licence
Public Domain
Commercial use
the licence allows it

3D model

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

Smithsonian Open Access and MorphoSource were 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 itBrontotheriita through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Lucas and Schoch 1982