Hemipolygona

Hemipolygona is a genus of sea snails, marine gastropod mollusks in the family Fasciolariidae, the spindle snails, the tulip snails and their allies.

Hemipolygona

Schubert & Wagner, 1829 · CC0 · 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
PeristerniinaePBDB
Diet
carnivorePBDB, for Fasciolariidae
Life habit
epifaunalPBDB, for Fasciolariidae
Motility
actively mobilePBDB, for Fasciolariidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 15 million years on record.

The record covers at least 15.98 Mya to 129 ka. No occurrence read is dated outside 20.45 Mya to 11.7 ka.

Miocene — about 2 of 4 occurrencesMiocenePliocene — about 0 of 4 occurrencesPleistocene — about 2 of 4 occurrencesPleistocene21–20 Mya — about 0.1 occurrences20–20 Mya — about 0.3 occurrences20–19 Mya — about 0.3 occurrences19–18 Mya — about 0.3 occurrences18–17 Mya — about 0.3 occurrences17–17 Mya — about 0.3 occurrences17–16 Mya — about 0.3 occurrences16–15 Mya — about 0.0 occurrences1.4–698 ka Mya — about 0.1 occurrences698 ka–0 Mya — about 2 occurrences15.98 Mya129 ka20.9 Mya0 Mya

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

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

1 formation

Chasra — 23.09°N, 69.05°EChasra — 23.42°N, 68.75°E

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The named rock units Hemipolygona has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Hemipolygona and its relatives

Miocene

Where Hemipolygona and its relatives were recorded in the Miocene.

Found in the same rock

66 taxa

The Paleobiology Database records 2 sites for Hemipolygona, 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

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 doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Hemipolygona

Credit
Schubert & Wagner, 1829
Licence
CC0
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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 itPeristerniinae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Rovereto 1889