Dallina

Dallina is a genus of small to average size lampshells. It is known since the Miocene.

Dallina

Dwergenpaartje · 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
DallininaePBDB
Diet
suspension feederPBDB, for Dallinidae
Life habit
low-level epifaunalPBDB, for Dallinidae
Motility
stationary, attachedPBDB, for Dallinidae
Vision
blindPBDB, for Rhynchonellata
Environment
marinePBDB, for Lophophorata

Time the record covers

At least 36 million years on record.

The record covers at least 37.71 Mya to 774 ka. No occurrence read is dated outside 41.03 Mya to 129 ka.

Eocene — about 1 of 22 occurrencesEoceneOligocene — about 0 of 22 occurrencesMiocene — about 0 of 22 occurrencesPliocene — about 7 of 22 occurrencesPleistocene — about 14 of 22 occurrences42–40 Mya — about 0.2 occurrences40–39 Mya — about 0.4 occurrences39–38 Mya — about 0.4 occurrences5.6–4.2 Mya — about 3 occurrences4.2–2.8 Mya — about 3 occurrences2.8–1.4 Mya — about 11 occurrences1.4–0 Mya — about 3 occurrences37.71 Mya774 ka41.8 Mya0 Mya

22 occurrences of Dallina on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

22 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

5 formations

Suva Marl — 18.10°S, 178.44°EShinzato — 26.17°N, 127.82°ENaarai — 35.70°N, 140.85°EKoshima — 35.35°N, 139.64°EHarada — 34.70°N, 138.98°E

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The named rock units Dallina has been recovered from, largest first. Drawn where the rock is now, not where it formed. 17 occurrences have no formation on record, which is common for older literature.

Dallina and its relatives

Pleistocene

Where Dallina and its relatives were recorded in the Pleistocene.

Found in the same rock

43 taxa

The Paleobiology Database records 21 sites for Dallina, 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

6 references

Each of the 22 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 Dallina

Credit
Dwergenpaartje
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Dallina 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.

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 itDallininae through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Beecher 1893