Aequispirella

Aequispirella is a genus of sea snails, marine gastropod mollusks, unassigned in the superfamily Seguenzioidea.

Aequispirella

Auckland War Memorial Museum · CC BY 4.0 · 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
SkeneidaePBDB
Diet
grazerPBDB, for Skeneidae
Life habit
epifaunalPBDB, for Skeneidae
Motility
actively mobilePBDB, for Skeneidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 142 million years on record.

The record covers at least 161.5 Mya to 18.7 Mya. No occurrence read is dated outside 165.3 Mya to 15.9 Mya.

Middle Jurassic — about 1 of 4 occurrencesLate Jurassic — about 0 of 4 occurrencesEarly Cretaceous — about 0 of 4 occurrencesLate Cretaceous — about 0 of 4 occurrencesPaleocene — about 0 of 4 occurrencesEocene — about 1 of 4 occurrencesEoceneOligocene — about 0 of 4 occurrencesMiocene — about 2 of 4 occurrences168–163 Mya — about 0.6 occurrences163–158 Mya — about 0.4 occurrences39–34 Mya — about 1 occurrence23–18 Mya — about 0.4 occurrences18–13 Mya — about 2 occurrences161.5 Mya18.7 Mya168 Mya13 Mya

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

Found in

2 formations

Rifle Butts — 45.03°S, 170.02°EWaihao Greensand — 44.78°S, 171.17°E

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The named rock units Aequispirella 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.

Aequispirella and its relatives

Miocene

Where Aequispirella and its relatives were recorded in the Miocene.

Found in the same rock

148 taxa

The Paleobiology Database records 2 sites for Aequispirella, 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

3 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 Aequispirella

Credit
Auckland War Memorial Museum
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan of Aequispirella 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 itSkeneidae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Finlay 1924)