Semicassis bisulcata

Semicassis bisulcata, common name: the Japanese bonnet, is a species of large sea snail, a marine gastropod mollusk in the family Cassidae, the helmet snails and bonnet snails.

Semicassis bisulcata

H. Zell · CC BY-SA 3.0 · 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
SemicassisPBDB
Diet
carnivorePBDB, for Cassidae
Life habit
epifaunalPBDB, for Cassidae
Motility
actively mobilePBDB, for Cassidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 15 million years on record.

The record covers at least 15.98 Mya to 774 ka. No occurrence read is dated outside 23.04 Mya to 11.7 ka.

Oligocene — about 0 of 20 occurrencesMiocene — about 4 of 20 occurrencesMiocenePliocene — about 9 of 20 occurrencesPliocenePleistocene — about 7 of 20 occurrencesPleistocene24–23 Mya — about 0.1 occurrences23–22 Mya — about 0.2 occurrences22–21 Mya — about 0.2 occurrences21–20 Mya — about 0.2 occurrences20–20 Mya — about 0.4 occurrences20–19 Mya — about 0.4 occurrences19–18 Mya — about 0.4 occurrences18–17 Mya — about 0.4 occurrences17–16 Mya — about 0.4 occurrences16–16 Mya — about 0.3 occurrences12–11 Mya — about 0.1 occurrences11–10 Mya — about 0.1 occurrences10–9.4 Mya — about 0.1 occurrences9.4–8.6 Mya — about 0.1 occurrences8.6–7.8 Mya — about 0.1 occurrences7.8–7.1 Mya — about 0.1 occurrences7.1–6.3 Mya — about 0.1 occurrences6.3–5.5 Mya — about 0.1 occurrences5.5–4.7 Mya — about 2 occurrences4.7–3.9 Mya — about 3 occurrences3.9–3.1 Mya — about 2 occurrences3.1–2.4 Mya — about 2 occurrences2.4–1.6 Mya — about 2 occurrences1.6–785 ka Mya — about 2 occurrences785 ka–0 Mya — about 2 occurrences15.98 Mya774 ka23.5 Mya0 Mya

20 occurrences of Semicassis bisulcata on record, most of them in the Pliocene. 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

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

7 formations

Togopi — 5.50°N, 117.00°ETuatua Limestone — 16.80°S, 178.88°ETuatua Limestone — 17.47°S, 177.05°EQuilon Limestone — 8.87°N, 76.59°EShinzato — 26.11°N, 127.74°ENakasi — 18.03°S, 178.52°EUpper Kalibeng — 7.37°S, 111.32°EBand-e- Chaker — 26.68°N, 57.93°E

Loading coastlines…

The named rock units Semicassis bisulcata has been recovered from, largest first. Drawn where the rock is now, not where it formed. 7 occurrences have no formation on record, which is common for older literature.

Semicassis bisulcata and its relatives

Pliocene

Where Semicassis bisulcata and its relatives were recorded in the Pliocene.

Found in the same rock

407 taxa

The Paleobiology Database records 6 sites for Semicassis bisulcata, 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

10 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. 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 Semicassis bisulcata

Credit
H. Zell
Licence
CC BY-SA 3.0
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 itSemicassis through timeFormations of the PlioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Schubert and Wagner 1829)