Trogosus

Trogosus is an extinct genus of tillodont mammal. Fossils have been found in Wyoming, California, and British Columbia, and date from the Eocene between 54.8 and 33.7 million years ago.

Trogosus

Daderot · 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
TrogosinaePBDB
Diet
herbivorePBDB, for Tillodontia
Life habit
ground dwellingPBDB, for Tillodontia
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Eutheria

Time the record covers

At least 3 million years on record.

The record covers at least 51.1 Mya to 48.07 Mya. No occurrence read is dated outside 56 Mya to 37.71 Mya.

Paleocene — about 0 of 43 occurrencesEocene — about 43 of 43 occurrencesEocene57–56 Mya — about 0.1 occurrences56–55 Mya — about 0.4 occurrences55–55 Mya — about 0.4 occurrences55–54 Mya — about 0.4 occurrences54–53 Mya — about 0.4 occurrences53–53 Mya — about 0.4 occurrences53–52 Mya — about 0.4 occurrences52–51 Mya — about 0.4 occurrences51–51 Mya — about 3 occurrences51–50 Mya — about 5 occurrences50–49 Mya — about 5 occurrences49–49 Mya — about 5 occurrences49–48 Mya — about 5 occurrences48–47 Mya — about 5 occurrences47–47 Mya — about 5 occurrences47–46 Mya — about 5 occurrences46–46 Mya — about 2 occurrences46–45 Mya — about 0.1 occurrences45–44 Mya — about 0.1 occurrences44–44 Mya — about 0.1 occurrences44–43 Mya — about 0.1 occurrences43–42 Mya — about 0.1 occurrences42–42 Mya — about 0.1 occurrences42–41 Mya — about 0.1 occurrences41–40 Mya — about 0.1 occurrences40–40 Mya — about 0.1 occurrences40–39 Mya — about 0.1 occurrences39–38 Mya — about 0.1 occurrences38–38 Mya — about 0.1 occurrences38–37 Mya — about 0.0 occurrences51.1 Mya48.07 Mya56.5 Mya37.2 Mya

43 occurrences of Trogosus 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

43 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

13 formations

Bridger — 41.20°N, 110.50°WBridger — 41.70°N, 109.00°WBridger — 41.80°N, 110.70°WBridger — 41.77°N, 110.33°WBridger — 41.40°N, 110.33°WAycross — 43.20°N, 108.20°WAycross — 43.70°N, 108.70°WAycross — 44.30°N, 109.00°WHuerfano — 37.80°N, 105.10°WWasatch — 42.70°N, 110.10°WWasatch — 41.75°N, 108.00°WWasatch — 42.37°N, 108.91°WWind River — 43.20°N, 107.33°WWind River — 43.20°N, 107.10°WAkasaki — 32.35°N, 130.32°EAkasaki — 30.58°N, 130.42°EAllenby — 49.44°N, 120.55°WWillwood — 44.30°N, 109.00°WGreen River — 40.20°N, 109.90°WDelmar — 33.03°N, 117.29°W? Tepee Trail — 43.90°N, 110.80°WWapiti — 44.30°N, 109.00°WDacangfang — 32.57°N, 111.48°E

Loading coastlines…

The named rock units Trogosus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Trogosus and its relatives

Eocene

Where Trogosus and its relatives were recorded in the Eocene.

Found in the same rock

323 taxa

The Paleobiology Database records 41 sites for Trogosus, 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

21 references

Each of the 43 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. 9 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 Trogosus

Credit
Daderot
Licence
Public Domain
Commercial use
the licence allows it

CT scan

Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record
Specimen
Trogosus hillsii · usnm:paleobiology:V17157

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 itTrogosinae through timeFormations of the EoceneThe world it lived on

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