Notharctus tenebrosus

Notharctus is a genus of adapiform primate that lived in North America during the early to middle Eocene. Known from many geologic formations, including the Bridger Basin and the Devil's Graveyard Formation, Notharctus was wide-ranging throughout North America.

Notharctus tenebrosus

Jonathan Chen · CC BY-SA 4.0 · 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
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 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.

Eocene — about 16 of 16 occurrencesEocene51–51 Mya — about 0.9 occurrences51–50 Mya — about 1 occurrence50–50 Mya — about 1 occurrence50–50 Mya — about 1 occurrence50–49 Mya — about 1 occurrence49–49 Mya — about 1 occurrence49–48 Mya — about 1 occurrence48–48 Mya — about 1 occurrence48–47 Mya — about 1 occurrence47–47 Mya — about 1 occurrence47–47 Mya — about 1 occurrence47–46 Mya — about 1 occurrence46–46 Mya — about 1.0 occurrences46–45 Mya — about 0.1 occurrences45–45 Mya — about 0.1 occurrences45–45 Mya — about 0.1 occurrences45–44 Mya — about 0.1 occurrences44–44 Mya — about 0.1 occurrences44–43 Mya — about 0.1 occurrences43–43 Mya — about 0.1 occurrences43–43 Mya — about 0.1 occurrences43–42 Mya — about 0.1 occurrences42–42 Mya — about 0.1 occurrences42–41 Mya — about 0.1 occurrences41–41 Mya — about 0.1 occurrences41–40 Mya — about 0.1 occurrences40–40 Mya — about 0.1 occurrences40–40 Mya — about 0.1 occurrences51.6 Mya39.2 Mya

16 occurrences of Notharctus tenebrosus 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

16 occurrences

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

4 formations

Bridger — 41.20°N, 110.50°WBridger — 41.65°N, 110.92°W"Sheep Pass" — 39.00°N, 114.10°WGreen River — 40.20°N, 109.90°WDevil's Graveyard — 29.20°N, 103.20°W

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The named rock units Notharctus tenebrosus has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Notharctus tenebrosus and its relatives

Eocene

Where Notharctus tenebrosus and its relatives were recorded in the Eocene.

Found in the same rock

178 taxa

The Paleobiology Database records 11 sites for Notharctus tenebrosus, 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

10 references

Each of the 16 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 Notharctus tenebrosus

Credit
Jonathan Chen
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

CT scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Notharctus tenebrosus · AMNH:FM:131950

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 itNotharctus through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Leidy 1870