Leptarctus primus

Leptarctus primus

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
LeptarctusPBDB
Diet
omnivorePBDB, for Leptarctus
Life habit
scansorialPBDB, for Mustelidae
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Eutheria

Time the record covers

At most 18 million years on record.

Every occurrence read is dated to somewhere between 23.04 Mya and 5.333 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Oligocene — about 0 of 11 occurrencesMiocene — about 11 of 11 occurrencesMiocenePliocene — about 0 of 11 occurrences24–23 Mya — about 0.0 occurrences23–22 Mya — about 0.0 occurrences22–22 Mya — about 0.0 occurrences22–21 Mya — about 0.0 occurrences21–20 Mya — about 0.0 occurrences20–20 Mya — about 0.0 occurrences20–19 Mya — about 0.0 occurrences19–19 Mya — about 0.0 occurrences19–18 Mya — about 0.0 occurrences18–17 Mya — about 0.0 occurrences17–17 Mya — about 0.0 occurrences17–16 Mya — about 0.6 occurrences16–15 Mya — about 2 occurrences15–15 Mya — about 2 occurrences15–14 Mya — about 2 occurrences14–14 Mya — about 2 occurrences14–13 Mya — about 2 occurrences13–12 Mya — about 1 occurrence12–12 Mya — about 0.2 occurrences12–11 Mya — about 0.2 occurrences11–10 Mya — about 0.2 occurrences10–9.8 Mya — about 0.2 occurrences9.8–9.2 Mya — about 0.2 occurrences9.2–8.6 Mya — about 0.0 occurrences8.6–8.0 Mya — about 0.0 occurrences8.0–7.3 Mya — about 0.0 occurrences7.3–6.7 Mya — about 0.0 occurrences6.7–6.1 Mya — about 0.0 occurrences6.1–5.5 Mya — about 0.0 occurrences5.5–4.8 Mya — about 0.0 occurrences23.5 Mya4.8 Mya

11 occurrences of Leptarctus primus on record, most of them in the Miocene. 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 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

6 formations

Valentine — 42.49°N, 98.11°WValentine — 42.70°N, 100.00°WValentine — 42.78°N, 100.03°WValentine — 42.80°N, 100.80°WValentine — 43.30°N, 100.65°WPawnee Creek Beds — 40.80°N, 103.10°WFort Randall — 43.10°N, 98.30°WMadison Valley — 45.93°N, 111.29°WSixmile Creek — 46.00°N, 112.00°WAsh Hollow — 42.80°N, 100.80°W

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The named rock units Leptarctus primus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Leptarctus primus and its relatives

Miocene

Where Leptarctus primus and its relatives were recorded in the Miocene.

Found in the same rock

271 taxa

The Paleobiology Database records 11 sites for Leptarctus primus, 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

7 references

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 content2

Picture of Leptarctus primus

Source
iDigBio
Credit
via iDigBio
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

CT scan

Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record
Specimen
Leptarctus primus · UCMP:V:29582

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 itLeptarctus through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Leidy 1856