Pusillina

Pusillina is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Rissoidae.

Pusillina

H. Zell · CC BY-SA 3.0 · 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
RissoidaePBDB
Diet
grazerPBDB, for Rissoidae
Life habit
epifaunalPBDB, for Rissoidae
Motility
actively mobilePBDB, for Rissoidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 61 million years on record.

The record covers at least 61.66 Mya to 129 ka. No occurrence read is dated outside 66 Mya to 11.7 ka.

Late Cretaceous — about 0 of 21 occurrencesPaleocene — about 1 of 21 occurrencesPaleoceneEocene — about 6 of 21 occurrencesEoceneOligocene — about 0 of 21 occurrencesMiocene — about 2 of 21 occurrencesMiocenePliocene — about 5 of 21 occurrencesPleistocene — about 7 of 21 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 0.6 occurrences47–45 Mya — about 1.0 occurrences45–43 Mya — about 1.0 occurrences43–40 Mya — about 1 occurrence40–38 Mya — about 1 occurrence38–36 Mya — about 0.3 occurrences25–22 Mya — about 0.2 occurrences22–20 Mya — about 0.8 occurrences13–11 Mya — about 0.1 occurrences11–9.0 Mya — about 0.4 occurrences9.0–6.7 Mya — about 0.4 occurrences6.7–4.5 Mya — about 3 occurrences4.5–2.2 Mya — about 3 occurrences2.2–0 Mya — about 7 occurrences61.66 Mya129 ka67 Mya0 Mya

21 occurrences of Pusillina on record, most of them in the Pleistocene. 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

21 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

9 formations

Ortovero Clay — 44.10°N, 8.23°ELondon Clay — 50.83°N, 0.78°WSables a Nummulites variolarius — 49.25°N, 2.50°ESelsey — 50.73°N, 0.78°WBarton Clay — 50.74°N, 1.69°WFalun de Saucats — 44.66°N, 0.57°WBanc à verrins — 48.85°N, 1.94°EKincaid — 31.29°N, 96.72°WRhodes — 36.42°N, 28.20°E

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The named rock units Pusillina has been recovered from, largest first. Drawn where the rock is now, not where it formed. 8 occurrences have no formation on record, which is common for older literature.

Pusillina and its relatives

Pleistocene

Where Pusillina and its relatives were recorded in the Pleistocene.

Found in the same rock

1,138 taxa

The Paleobiology Database records 12 sites for Pusillina, 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

12 references

Each of the 21 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 Pusillina

Credit
H. Zell
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Pusillina 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.

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 itRissoidae through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Monterosato 1884)