Volema

Volema is a genus of sea snails, marine gastropod molluscs in the family Melongenidae, the crown conches and their allies.

Volema

Uncredited · 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
MelongenidaePBDB
Diet
carnivorePBDB, for Melongenidae
Life habit
epifaunalPBDB, for Melongenidae
Motility
actively mobilePBDB, for Melongenidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 55 million years on record.

The record covers at least 56 Mya to 11.7 ka. No occurrence read is dated outside 61.66 Mya to 0 Mya.

Paleocene — about 2 of 60 occurrencesPaleoceneEocene — about 24 of 60 occurrencesEoceneOligocene — about 7 of 60 occurrencesOligoceneMiocene — about 7 of 60 occurrencesMiocenePliocene — about 7 of 60 occurrencesPleistocene — about 12 of 60 occurrences63–61 Mya — about 0.2 occurrences61–59 Mya — about 0.5 occurrences59–57 Mya — about 1 occurrence57–55 Mya — about 0.9 occurrences55–52 Mya — about 0.9 occurrences52–50 Mya — about 0.9 occurrences50–48 Mya — about 0.9 occurrences48–46 Mya — about 0.9 occurrences46–44 Mya — about 0.9 occurrences44–42 Mya — about 0.9 occurrences42–40 Mya — about 3 occurrences40–38 Mya — about 5 occurrences38–36 Mya — about 5 occurrences36–34 Mya — about 5 occurrences34–31 Mya — about 2 occurrences31–29 Mya — about 2 occurrences29–27 Mya — about 2 occurrences27–25 Mya — about 0.2 occurrences25–23 Mya — about 0.2 occurrences23–21 Mya — about 0.1 occurrences21–19 Mya — about 0.1 occurrences19–17 Mya — about 0.1 occurrences17–15 Mya — about 2 occurrences15–13 Mya — about 2 occurrences13–10 Mya — about 1 occurrence10–8.4 Mya — about 0.5 occurrences8.4–6.3 Mya — about 0.5 occurrences6.3–4.2 Mya — about 3 occurrences4.2–2.1 Mya — about 5 occurrences2.1–0 Mya — about 12 occurrences56 Mya11.7 ka63 Mya0 Mya

60 occurrences of Volema on record, most of them in the Eocene. 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

60 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

19 formations

Cowlitz — 46.40°N, 122.93°WCowlitz — 46.20°N, 123.02°WSan Emigdio — 35.06°N, 119.18°WLincoln Creek — 46.41°N, 122.93°WNyalindung — 7.00°S, 106.63°ENyalindung — 7.49°S, 110.00°EToshima Sand — 34.62°N, 137.22°ETejon — 34.93°N, 118.87°WEugene — 44.05°N, 123.09°WToukoshan — 24.47°N, 120.72°ETartaro — 14.95°N, 121.05°EByram — 32.32°N, 90.86°WCzarnorzeki Beds — 49.77°N, 21.93°EHangu — 33.53°N, 71.06°EAbbas — 16.75°N, 41.73°ETogopi — 5.50°N, 117.00°ELower Gelingseh — 1.50°N, 116.50°EUpper Kalibeng — 7.49°S, 110.00°EKamiyokoze — 35.97°N, 139.05°ECalcaire à Astéries — 43.62°N, 1.05°WKattachi — 33.60°N, 130.58°E

Loading coastlines…

The named rock units Volema has been recovered from, largest first. Drawn where the rock is now, not where it formed. 18 occurrences have no formation on record, which is common for older literature.

Volema and its relatives

Eocene

Where Volema and its relatives were recorded in the Eocene.

Found in the same rock

803 taxa

The Paleobiology Database records 35 sites for Volema, 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

26 references

Each of the 60 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. 14 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 content1

Picture of Volema

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

No 3D scan of Volema 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 itMelongenidae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Röding 1798