Achaenodon robustus

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
- AchaenodonPBDB
- Diet
- grazer, browserPBDB, for Artiodactyla
- Life habit
- ground dwellingPBDB, for Artiodactyla
- 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 45.9 Mya and 39.7 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
7 occurrences of Achaenodon robustus 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
7 occurrences- Eocene100%
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
3 formations
- Friars Formation · La Jolla Group5
- Tepee Trail Formation1
- Washakie Formation1
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The named rock units Achaenodon robustus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Achaenodon robustus and its relatives
EoceneWhere Achaenodon robustus and its relatives were recorded in the Eocene.
Found in the same rock
30 taxa- Antiacodon venustus2 sites
- Metanoiamys agorus2 sites
- Patriolestes novaceki2 sites
- Achaenodon insolens1 site
- Amynodon1 site
- Amynodon advenus1 site
- Brontotheriidae1 site
- Dilophodon minusculus1 site
- Eobasileus cornutus1 site
- Eomoropus amarorum1 site
- Harpagolestes1 site
- Hesperaletes1 site
- Hesperaletes walshi1 site
- Hyopsodus1 site
- Hyrachyus eximius1 site
- Limnocyon potens1 site
- Metarhinus1 site
- Metarhinus pater1 site
- Notharctus robustior1 site
- Pentacemylus1 site
- Poebrodon1 site
- Protoptychus hatcheri1 site
- Protylopus petersoni1 site
- Rhinocerotoidea1 site
The Paleobiology Database records 7 sites for Achaenodon robustus, 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
3 references- Bunodont artiodactyls (Mammalia) from the Uintan (middle Eocene) of San Diego County, California5
- Biostratigraphy and magnetostratigraphy of the Bridgerian-Uintan Washakie Formation, Washakie Basin, Wyoming1
- Paleontology and Correlation of the Eocene Tepee Trail and Wiggins Formations in the North Fork of Owl Creek Area, Southeastern Absaroka Range, Hot Springs County, Wyoming1
Each of the 7 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 Achaenodon robustus
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Achaenodon robustus 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 itAchaenodon through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Osborn 1883