Limnocyon

Limnocyon is an extinct paraphyletic genus of limnocyonine hyaenodont that lived in North America during the Early to Middle Eocene, going extinct at the end of Uintan stage. Fossils of this animal have been found in California, Utah and Wyoming.

Limnocyon

W. D. Matthew · 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
LimnocyoninaePBDB
Diet
omnivorePBDB
Life habit
ground dwellingPBDB
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Eutheria

Time the record covers

At most 12 million years on record.

Every occurrence read is dated to somewhere between 51.1 Mya and 39.7 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Eocene — about 22 of 22 occurrencesEocene51–51 Mya — about 0.9 occurrences51–50 Mya — about 1 occurrence50–50 Mya — about 1 occurrence50–50 Mya — about 1 occurrence50–49 Mya — about 1 occurrence49–49 Mya — about 1 occurrence49–48 Mya — about 1 occurrence48–48 Mya — about 1 occurrence48–47 Mya — about 1 occurrence47–47 Mya — about 1 occurrence47–47 Mya — about 1 occurrence47–46 Mya — about 1 occurrence46–46 Mya — about 1 occurrence46–45 Mya — about 0.5 occurrences45–45 Mya — about 0.5 occurrences45–45 Mya — about 0.5 occurrences45–44 Mya — about 0.5 occurrences44–44 Mya — about 0.5 occurrences44–43 Mya — about 0.5 occurrences43–43 Mya — about 0.5 occurrences43–43 Mya — about 0.5 occurrences43–42 Mya — about 0.5 occurrences42–42 Mya — about 0.5 occurrences42–41 Mya — about 0.5 occurrences41–41 Mya — about 0.5 occurrences41–40 Mya — about 0.5 occurrences40–40 Mya — about 0.5 occurrences40–40 Mya — about 0.4 occurrences51.6 Mya39.2 Mya

22 occurrences of Limnocyon 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

22 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

7 formations

Bridger — 41.20°N, 110.50°WBridger — 41.80°N, 110.70°WBridger — 41.70°N, 109.00°WUinta — 40.17°N, 109.93°WWashakie — 41.70°N, 109.00°WWashakie — 41.13°N, 108.14°WWashakie — 41.29°N, 108.47°WWind River — 43.20°N, 107.33°WGreen River — 40.20°N, 109.90°WWagon Bed ("Tepee Trail") — 43.20°N, 107.10°WSantiago — 33.19°N, 117.32°W

Loading coastlines…

The named rock units Limnocyon 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.

Limnocyon and its relatives

Eocene

Where Limnocyon and its relatives were recorded in the Eocene.

Found in the same rock

363 taxa

The Paleobiology Database records 19 sites for Limnocyon, 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

17 references

Each of the 22 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. 5 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 Limnocyon

Credit
W. D. Matthew
Licence
Public Domain
Commercial use
the licence allows it

CT scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Limnocyon sp. · uwbm:vp:36223

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 itLimnocyoninae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Marsh 1872