Alvania

Searched as Alvania montagui ampulla. 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 most 8.9 million years on record.

Every occurrence read is dated to somewhere between 20.45 Mya and 11.63 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Miocene — about 2 of 2 occurrencesMiocene21–20 Mya — about 0.0 occurrences20–20 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 occurrences17–17 Mya — about 0.1 occurrences17–16 Mya — about 0.1 occurrences16–16 Mya — about 0.1 occurrences16–16 Mya — about 0.1 occurrences16–15 Mya — about 0.1 occurrences15–15 Mya — about 0.1 occurrences15–15 Mya — about 0.1 occurrences15–14 Mya — about 0.1 occurrences14–14 Mya — about 0.1 occurrences14–14 Mya — about 0.1 occurrences14–13 Mya — about 0.1 occurrences13–13 Mya — about 0.1 occurrences13–13 Mya — about 0.1 occurrences13–12 Mya — about 0.1 occurrences12–12 Mya — about 0.1 occurrences12–12 Mya — about 0.1 occurrences12–11 Mya — about 0.0 occurrences20.9 Mya11.1 Mya

2 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

2 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

1 formation

Fels — 48.50°N, 15.76°E

Loading coastlines…

The named rock units Alvania has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

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 2 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 Alvania

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

No 3D scan of Alvania 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 itRissoidae through timeFormations of the MioceneThe world it lived on

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