Helohyus lentus

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
- HelohyusPBDB
- Diet
- herbivore, omnivorePBDB, for Helohyus
- Life habit
- ground dwellingPBDB, for Artiodactyla
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Artiodactyla
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.
3 occurrences of Helohyus lentus 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
3 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
2 formations
- Bridger Formation2
- Canoe Formation · Big Bend Group1
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The named rock units Helohyus lentus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Helohyus lentus and its relatives
EoceneWhere Helohyus lentus and its relatives were recorded in the Eocene.
Found in the same rock
21 taxa- Hyopsodus paulus2 sites
- Uintasorex parvulus2 sites
- Antiacodon venustus1 site
- Apatemys bellus1 site
- Borealosuchus1 site
- Boverisuchus vorax1 site
- Brontotheriidae1 site
- Helohyus milleri1 site
- Homacodon vagans1 site
- Limnocyon medius1 site
- Microsus1 site
- Notharctus robustior1 site
- Nyctitherium curtidens1 site
- Palaeosyops fontinalis1 site
- Palaeosyops robustus1 site
- Pauromys schaubi1 site
- Peratherium comstocki1 site
- Sciuravidae1 site
- Telmatherium validus1 site
- Uintanius ameghini1 site
- Uintatherium anceps1 site
The Paleobiology Database records 3 sites for Helohyus lentus, and this reads all of them. The number is how many of those sites it was catalogued from too.
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- Paleontology and Geology of the Bridger Formation, Southern Green River Basin, Southwestern Wyoming. Part 7. Survey of Bridgerian Artiodactyla, including description of a skull and partial skeleton of Antiacodon pygmaeus1
- Early Tertiary mammals1
- A revision of the bunodont artiodactyla of the Middle and Lower Eocene of North America1
Each of the 3 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. Each entry links to the Paleobiology Database's own record for the work.
Media and terms
Media content1

Picture of Helohyus lentus
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Helohyus lentus was found in Sketchfab.
Smithsonian Open Access and MorphoSource were 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 itHelohyus through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Marsh 1871)