Notharctus robinsoni

via iDigBio · 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
- NotharctusPBDB
- Diet
- omnivorePBDB, for Primates
- Life habit
- arborealPBDB, for Primates
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At most 11 million years on record.
Every occurrence read is dated to somewhere between 56 Mya and 45.9 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
37 occurrences of Notharctus robinsoni 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
37 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
6 formations
- Bridger Formation29
- Wind River Formation4
- Wapiti Formation1
- Huerfano Formation1
- Green River Formation1
- Wasatch Formation1
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The named rock units Notharctus robinsoni has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Notharctus robinsoni and its relatives
EoceneWhere Notharctus robinsoni and its relatives were recorded in the Eocene.
Found in the same rock
205 taxa- Sciuravus nitidus17 sites
- Hyrachyus16 sites
- Smilodectes mcgrewi15 sites
- Omomys carteri14 sites
- Hyopsodus minusculus12 sites
- Microsyops elegans12 sites
- Uintaparamys parvus8 sites
- Washakius insignis8 sites
- Anaptomorphus westi7 sites
- Herpetotherium innominatum7 sites
- Rodentia7 sites
- Herpetotherium marsupium6 sites
- Homacodontidae6 sites
- Metacheiromys6 sites
- Microparamys minutus6 sites
- Microsyops scottianus6 sites
- Nyctitherium curtidens6 sites
- Orohippus pumilus6 sites
- Peradectes chesteri6 sites
- Sinopa rapax6 sites
- Apatemys bellulus5 sites
- Helaletes nanus5 sites
- Paramys delicatus5 sites
- Scenopagus edenensis5 sites
The Paleobiology Database records 37 sites for Notharctus robinsoni, 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
5 references- Mammalian Fauna From the Lower Bridger Formation (Bridger A, Early Middle Eocene) of the Southern Green River Basin, Wyoming20
- Phylogeny of middle Eocene Adapidae (Mammalia, Primates) in North America: Smilodectes and Notharctus8
- Revision of the Wind River faunas, early Eocene of central Wyoming. Part 5. Geology and biostratigraphy of the upper part of the Wind River Formation, northeastern Wind River Basin4
- Magnetostratigraphy across the Wasatchian-Bridgerian boundary (early to middle Eocene) in the western Green River Basin, Wyoming3
- Basin margins, biodiversity, evolutionary innovation, and the origin of new taxa2
Each of the 37 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 Notharctus robinsoni
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan of Notharctus robinsoni 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 itNotharctus through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Gingerich 1979