Alvania

Searched as Alvania montagui trochiformis. The Paleobiology Database treats Alvania as the accepted name.

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

Alvania

Jan Delsing · Public Domain · 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 2.1 million years on record.

The record covers at least 15.98 Mya to 13.82 Mya. No occurrence read is dated outside 23.04 Mya to 12.8 Mya.

Oligocene — about 0 of 4 occurrencesMiocene — about 4 of 4 occurrencesMiocene23–23 Mya — about 0.1 occurrences23–22 Mya — about 0.1 occurrences22–22 Mya — about 0.1 occurrences22–22 Mya — about 0.1 occurrences22–21 Mya — about 0.1 occurrences21–21 Mya — about 0.1 occurrences21–21 Mya — about 0.1 occurrences21–20 Mya — about 0.1 occurrences20–20 Mya — about 0.1 occurrences20–19 Mya — about 0.1 occurrences19–19 Mya — about 0.1 occurrences19–19 Mya — about 0.1 occurrences19–18 Mya — about 0.1 occurrences18–18 Mya — about 0.1 occurrences18–18 Mya — about 0.1 occurrences18–17 Mya — about 0.1 occurrences17–17 Mya — about 0.1 occurrences17–16 Mya — about 0.1 occurrences16–16 Mya — about 0.1 occurrences16–16 Mya — about 0.0 occurrences14–14 Mya — about 0.0 occurrences14–13 Mya — about 0.7 occurrences13–13 Mya — about 0.7 occurrences13–13 Mya — about 0.5 occurrences15.98 Mya13.82 Mya23.5 Mya12.3 Mya

4 occurrences of Alvania on record, most of them in the Miocene. 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

4 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.

Alvania and its relatives

Miocene

Where Alvania and its relatives were recorded in the Miocene.

Found in the same rock

2,114 taxa

The Paleobiology Database records 116 sites for Alvania, and this reads all of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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

2 references

Each of the 4 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Alvania

Credit
Jan Delsing
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Alvania 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 MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Risso 1826)