Glabella

Glabella is a genus of small tropical and warm-water sea snails, marine gastropod molluscs in the family Marginellidae, the margin snails.

Glabella

Adzivo at English Wikipedia · 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
MarginellidaePBDB
Diet
carnivorePBDB, for Marginellidae
Life habit
epifaunalPBDB, for Marginellidae
Motility
actively mobilePBDB, for Marginellidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 23 million years on record.

The record covers at least 27.3 Mya to 3.6 Mya. No occurrence read is dated outside 33.9 Mya to 2.58 Mya.

Eocene — about 0 of 20 occurrencesOligocene — about 1 of 20 occurrencesOligoceneMiocene — about 18 of 20 occurrencesMiocenePliocene — about 1 of 20 occurrencesPliocenePleistocene — about 0 of 20 occurrences35–33 Mya — about 0.1 occurrences33–32 Mya — about 0.2 occurrences32–31 Mya — about 0.2 occurrences31–30 Mya — about 0.2 occurrences30–29 Mya — about 0.2 occurrences29–28 Mya — about 0.2 occurrences28–27 Mya — about 0.1 occurrences21–20 Mya — about 0.1 occurrences20–19 Mya — about 1 occurrence19–18 Mya — about 3 occurrences18–17 Mya — about 5 occurrences17–16 Mya — about 5 occurrences16–15 Mya — about 2 occurrences15–14 Mya — about 2 occurrences14–13 Mya — about 0.1 occurrences4.1–3.0 Mya — about 0.6 occurrences3.0–2.0 Mya — about 0.5 occurrences27.3 Mya3.6 Mya34.5 Mya2 Mya

20 occurrences of Glabella 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

20 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

Rifle Butts — 45.03°S, 170.02°ERifle Butts — 45.12°S, 170.93°ERifle Butts — 45.08°S, 170.95°ETermofourà — 45.05°N, 7.80°EBaldissero — 45.03°N, 7.76°EBaldissero — 45.02°N, 7.71°ENari — 26.36°N, 67.86°EMoin — 9.99°N, 83.07°W

Loading coastlines…

The named rock units Glabella has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Glabella and its relatives

Miocene

Where Glabella and its relatives were recorded in the Miocene.

Found in the same rock

395 taxa

The Paleobiology Database records 4 sites for Glabella, 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

4 references

Each of the 20 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 content2

Picture of Glabella

Credit
Adzivo at English Wikipedia
Licence
Public Domain
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution-NonCommercial-NoDerivs
Commercial use
the licence does not allow it

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 itMarginellidae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Swainson 1840)