Lepton

Lepton

Uncredited · via Wikidata/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
LasaeidaePBDB
Diet
suspension feederPBDB
Life habit
infaunalPBDB
Motility
stationaryPBDB
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 61 million years on record.

The record covers at least 61.66 Mya to 11.7 ka. No occurrence read is dated outside 66 Mya to 0 Mya.

Late Cretaceous — about 0 of 23 occurrencesPaleocene — about 1 of 23 occurrencesPaleoceneEocene — about 2 of 23 occurrencesEoceneOligocene — about 0 of 23 occurrencesMiocene — about 10 of 23 occurrencesMiocenePliocene — about 2 of 23 occurrencesPleistocene — about 6 of 23 occurrences67–65 Mya — about 0.2 occurrences65–63 Mya — about 0.5 occurrences63–61 Mya — about 0.3 occurrences56–54 Mya — about 0.3 occurrences54–52 Mya — about 0.3 occurrences52–49 Mya — about 0.3 occurrences49–47 Mya — about 0.2 occurrences43–40 Mya — about 0.2 occurrences40–38 Mya — about 0.7 occurrences38–36 Mya — about 0.1 occurrences25–22 Mya — about 0.5 occurrences22–20 Mya — about 2 occurrences20–18 Mya — about 0.5 occurrences18–16 Mya — about 0.8 occurrences16–13 Mya — about 2 occurrences13–11 Mya — about 2 occurrences11–9.0 Mya — about 1 occurrence9.0–6.7 Mya — about 1 occurrence6.7–4.5 Mya — about 1 occurrence4.5–2.2 Mya — about 2 occurrences2.2–0 Mya — about 7 occurrences61.66 Mya11.7 ka67 Mya0 Mya

23 occurrences of Lepton on record, most of them in the Miocene. The Paleobiology Database records this as a living group. 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

23 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

11 formations

Norwich Crag — 52.58°N, 1.38°EFalun de Sainte-Avit — 43.91°N, 0.66°WSables a Nummulites variolarius — 49.25°N, 2.50°ECalcaire de Mons — 50.45°N, 3.93°EMontello conglomerate — 46.22°N, 12.80°ENew Orleans Barrier Trend — 30.05°N, 89.96°WCoralline Crag — 52.75°N, 1.53°EHatchetigbee — 31.94°N, 88.06°WGram — 55.28°N, 9.00°EWerder — 52.98°N, 9.06°EBreda — 51.95°N, 6.75°E

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The named rock units Lepton has been recovered from, largest first. Drawn where the rock is now, not where it formed. 7 occurrences have no formation on record, which is common for older literature.

Lepton and its relatives

Miocene

Where Lepton and its relatives were recorded in the Miocene.

Found in the same rock

1,541 taxa

The Paleobiology Database records 14 sites for Lepton, 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

17 references

Each of the 23 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. 5 further references are not listed. 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 Lepton

Credit
nobody named on the record
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

CT scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Hapsidopareion lepton · FMNH:UR:2304

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 itLasaeidae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Turton 1822