Phenacocoelus
Phenacocoelus is an extinct genus of Artiodactyl of the family Merycoidodontidae, endemic to North America. They lived during the Early Miocene 24.8—20.4 mya, existing for approximately 4 million years. Fossils have been uncovered in eastern Wyoming and western Nebraska, both in the United States.

Ted Fremd · 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
- TicholeptinaePBDB
- Diet
- herbivorePBDB, for Merycoidodontidae
- Life habit
- ground dwellingPBDB, for Merycoidodontidae
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Artiodactyla
Time the record covers
At most 6.2 million years on record.
Every occurrence read is dated to somewhere between 24.7 Mya and 18.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
6 occurrences of Phenacocoelus on record, most of them in the Miocene. 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
6 occurrencesThese 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
3 formations
- Harrison Formation2
- Monroe Creek Formation1
- Marsland Formation · Hemingford Group1
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The named rock units Phenacocoelus 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.
Phenacocoelus and its relatives
MioceneWhere Phenacocoelus and its relatives were recorded in the Miocene.
Found in the same rock
57 taxa- Cormocyon haydeni2 sites
- Megalictis ferox2 sites
- Promerycochoerus carrikeri2 sites
- Stenomylus gracilis2 sites
- Zodiolestes2 sites
- Adilophontes brachykolos1 site
- Anchitheriinae1 site
- Capacikala1 site
- Cynarctoides acridens1 site
- Cynarctoides luskensis1 site
- Daphoenodon1 site
- Daphoenodon falkenbachi1 site
- Delotrochanter petersoni1 site
- Desmatochoerus curvidens1 site
- Desmatochoerus megalodon1 site
- Desmocyon thomsoni1 site
- Diceratherium1 site
- Diceratherium annectens1 site
- Diceratherium armatum1 site
- Dinohyus1 site
- Enhydrocyon crassidens1 site
- Equidae1 site
- Euhapsis breugerorum1 site
- Euhapsis ellicottae1 site
The Paleobiology Database records 6 sites for Phenacocoelus, 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
4 references- Phenacocoelinae, a new subfamily of oreodonts3
- Faunal succession and biochronology of the Arikareean through Hemphillian interval (late Oligocene through earliest Pliocene epochs) in North America1
- An early Miocene land mammal (Oreodonta) from a marine limestone in northern Florida1
- The Miocene Beds of Western Nebraska and Eastern Wyoming and Their Vertebrate Faunae1
Each of the 6 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 Phenacocoelus
- Source
- Wikipedia/Commons
- Credit
- Ted Fremd
- Licence
- Public Domain
- Commercial use
- the licence allows it
Laser scan
- Source
- MorphoSource
- Licence
- In Copyright
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Phenacocoelus stouti · FMNH:P:12251
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 itTicholeptinae through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Peterson 1907