Mesoreodon chelonyx

via iDigBio · CC0 · via iDigBio. 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
- MesoreodonPBDB
- 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 14 million years on record.
Every occurrence read is dated to somewhere between 31.8 Mya and 18.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
11 occurrences of Mesoreodon chelonyx 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
11 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
2 formations
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The named rock units Mesoreodon chelonyx has been recovered from, largest first. Drawn where the rock is now, not where it formed. 8 occurrences have no formation on record, which is common for older literature.
Mesoreodon chelonyx and its relatives
OligoceneWhere Mesoreodon chelonyx and its relatives were recorded in the Oligocene.
Found in the same rock
44 taxa- Leptauchenia decora3 sites
- Leptauchenia major3 sites
- Desmatochoerus hatcheri2 sites
- Desmatochoerus megalodon2 sites
- Mesoreodon minor2 sites
- Agnotocastor montanus1 site
- Archaeolagus1 site
- Blastomeryx gemmifer1 site
- Camelidae1 site
- Capacikala gradatus1 site
- Cynodesmus thooides1 site
- Desmatochoerus curvidens1 site
- Diceratherium annectens1 site
- Dinohyus minimus1 site
- Enhydrocyon basilatus1 site
- Enhydrocyon pahinsintewakpa1 site
- Eumys brachyodus1 site
- Florentiamys loomisi1 site
- Hypertragulus calcaratus1 site
- Hypsiops latidens1 site
- Leptauchenia lullianus1 site
- Megalagus dawsoni1 site
- Megoreodon grandis1 site
- Menoceras arikarense1 site
The Paleobiology Database records 8 sites for Mesoreodon chelonyx, 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- New vertebrates from the Montana Tertiary4
- Synonymies and reidentifications of North American fossil mammals3
- Early Miocene mammals from the Lemhi Valley of Idaho1
- The Phylogeny of the Oreodonts. Part 1: Merycoidodontinae, Eporeodontinae, and Leptaucheniinae, Three Subfamilies Of Oreodonts, With an Appendix to the Revision Of The Merycoidodontidae, and Part 2. Summary and Conclusions Concerning the Merycoidodontidae1
- Preliminary Analysis of the Fossil Vertebrates of the Canyon Ferry Reservoir Area1
- Contributions to the Stratigraphy and Palaeontology of the Goshen Hole Area, Wyoming. IV. New Vertebrates and the Stratigraphy of the Oligocene and Early Miocene1
Each of the 11 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 content1

Picture of Mesoreodon chelonyx
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Mesoreodon chelonyx was found in MorphoSource and Sketchfab.
Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itMesoreodon through timeFormations of the OligoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Scott 1893