Cassis

Cassis, common name the helmet shells, is a genus of very large sea snails, marine gastropod mollusks in the family Cassidae, the helmet shells and their allies. This is the type genus of the subfamily Cassinae.

Cassis

Didier Descouens · 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
CassinaePBDB
Diet
carnivorePBDB, for Cassidae
Life habit
epifaunalPBDB, for Cassidae
Motility
actively mobilePBDB, for Cassidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 61 million years on record.

The record covers at least 61.66 Mya to 129 ka. No occurrence read is dated outside 66 Mya to 11.7 ka.

Late Cretaceous — about 0 of 238 occurrencesPaleocene — about 2 of 238 occurrencesPaleoceneEocene — about 61 of 238 occurrencesEoceneOligocene — about 22 of 238 occurrencesOligoceneMiocene — about 86 of 238 occurrencesMiocenePliocene — about 56 of 238 occurrencesPleistocene — about 10 of 238 occurrences67–65 Mya — about 0.3 occurrences65–63 Mya — about 0.7 occurrences63–61 Mya — about 0.5 occurrences61–58 Mya — about 0.2 occurrences58–56 Mya — about 0.2 occurrences56–54 Mya — about 0.6 occurrences54–52 Mya — about 0.6 occurrences52–49 Mya — about 0.6 occurrences49–47 Mya — about 2 occurrences47–45 Mya — about 4 occurrences45–43 Mya — about 4 occurrences43–40 Mya — about 11 occurrences40–38 Mya — about 27 occurrences38–36 Mya — about 8 occurrences36–34 Mya — about 3 occurrences34–31 Mya — about 7 occurrences31–29 Mya — about 7 occurrences29–27 Mya — about 6 occurrences27–25 Mya — about 1 occurrence25–22 Mya — about 1 occurrence22–20 Mya — about 2 occurrences20–18 Mya — about 4 occurrences18–16 Mya — about 4 occurrences16–13 Mya — about 4 occurrences13–11 Mya — about 5 occurrences11–9.0 Mya — about 13 occurrences9.0–6.7 Mya — about 22 occurrences6.7–4.5 Mya — about 48 occurrences4.5–2.2 Mya — about 40 occurrences2.2–0 Mya — about 10 occurrences61.66 Mya129 ka67 Mya0 Mya

238 occurrences of Cassis 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

238 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

67 formations

Gurabo — 19.48°N, 71.09°WGurabo — 19.53°N, 71.20°WGurabo — 19.48°N, 70.98°WGurabo — 19.45°N, 70.70°WGurabo — 19.53°N, 71.33°WGurabo — 19.30°N, 71.67°WGurabo — 19.58°N, 71.05°WGurabo — 19.30°N, 70.50°WGurabo — 18.93°N, 71.62°WGurabo — 19.35°N, 70.72°WCook Mountain — 32.32°N, 89.03°WCook Mountain — 32.32°N, 89.16°WCook Mountain — 32.04°N, 88.73°WCook Mountain — 32.10°N, 88.86°WCook Mountain — 32.51°N, 92.12°WCook Mountain — 31.35°N, 93.65°WCook Mountain — 32.17°N, 88.83°WCook Mountain — 32.14°N, 89.00°WCook Mountain — 31.03°N, 95.63°WCook Mountain — 31.20°N, 95.73°WCook Mountain — 29.95°N, 97.14°WCook Mountain — 30.64°N, 96.52°WCercado — 19.47°N, 71.08°WCercado — 19.53°N, 71.27°WCercado — 19.30°N, 71.67°WCercado — 19.58°N, 71.04°WCercado — 19.35°N, 70.70°WFlint River — 30.91°N, 84.58°WFlint River — 31.77°N, 83.99°WBowden — 17.88°N, 76.28°WMare — 10.00°N, 64.00°WMare — 10.61°N, 63.52°WMare — 10.64°N, 64.11°WDry Creek Sands — 34.70°S, 138.62°EDry Creek Sands — 34.75°S, 138.68°EDry Creek Sands — 34.97°S, 138.54°EDry Creek Sands — 34.90°S, 138.56°EDry Creek Sands — 34.85°S, 138.60°ELisbon — 31.76°N, 88.10°WLisbon — 31.50°N, 87.80°WLisbon — 32.32°N, 89.16°WNanggulan — 7.73°S, 110.18°ENanggulan — 7.48°S, 110.05°EGheldeis — 9.23°N, 50.67°EGheldeis — 9.75°N, 50.78°EGheldeis — 7.87°N, 49.80°ETamiami — 27.34°N, 82.42°WTamiami — 27.33°N, 82.53°WTamiami — 25.90°N, 81.30°WSuwannee Limestone — 30.63°N, 85.59°WSuwannee Limestone — 28.56°N, 82.39°WSuwannee Limestone — 29.33°N, 83.14°WCayo Agua — 9.15°N, 82.03°WCayo Agua — 9.14°N, 82.01°WMoin — 10.00°N, 83.03°WLondon Clay — 51.73°N, 0.48°ELondon Clay — 51.51°N, 0.24°EOnzole — 0.97°N, 79.57°WOnzole — 0.95°N, 79.74°WCastle Hayne — 34.44°N, 77.89°WCastle Hayne — 34.23°N, 77.94°WMao — 19.52°N, 71.13°WMao — 19.57°N, 71.17°WFort Thompson — 26.79°N, 81.30°WFort Thompson — 26.76°N, 81.44°WBermont — 26.38°N, 80.71°WMoodys Branch — 31.67°N, 92.89°WMoodys Branch — 31.60°N, 92.80°WMoneague — 18.37°N, 77.38°WMoneague — 18.08°N, 77.00°WRio Banano — 9.62°N, 82.83°WRio Banano — 9.94°N, 83.07°WRio Gurabo — 19.50°N, 71.17°W

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The named rock units Cassis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 43 further formations hold fewer occurrences each and are not listed. 30 occurrences have no formation on record, which is common for older literature.

Cassis and its relatives

Miocene

Where Cassis and its relatives were recorded in the Miocene.

Found in the same rock

2,513 taxa

The Paleobiology Database records 108 sites for Cassis, 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

67 references

Each of the 238 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. 55 further references are not listed. 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 content3

Picture of Cassis

Credit
Didier Descouens
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

Photogrammetry

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Cassis flammea · UF:Invertebrate Zoology:121323-Mollusca

3D model

Source
Sketchfab
Credit
Emm
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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 itCassinae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Scopoli 1777