Cassidae

The Cassidae are a taxonomic family of medium-sized, large, and sometimes very large sea snails commonly called helmet snails or bonnet snails. These are marine gastropod mollusks in the superfamily Tonnoidea and the clade Littorinimorpha.

Cassidae

GrahamBould · 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
TonnoideaPBDB
Diet
carnivorePBDB
Life habit
epifaunalPBDB
Motility
actively mobilePBDB
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 93 million years on record.

The record covers at least 93.9 Mya to 11.7 ka. No occurrence read is dated outside 100.5 Mya to 0 Mya.

Early Cretaceous — about 0 of 1421 occurrencesLate Cretaceous — about 17 of 1421 occurrencesLate CretaceousPaleocene — about 22 of 1421 occurrencesPaleoceneEocene — about 371 of 1421 occurrencesEoceneOligocene — about 146 of 1421 occurrencesOligoceneMiocene — about 538 of 1421 occurrencesMiocenePliocene — about 239 of 1421 occurrencesPleistocene — about 84 of 1421 occurrences103–99 Mya — about 0.2 occurrences99–96 Mya — about 0.5 occurrences96–92 Mya — about 0.3 occurrences92–89 Mya — about 0.2 occurrences89–85 Mya — about 0.9 occurrences85–82 Mya — about 1 occurrence82–79 Mya — about 0.8 occurrences79–75 Mya — about 0.8 occurrences75–72 Mya — about 2 occurrences72–68 Mya — about 6 occurrences68–65 Mya — about 6 occurrences65–62 Mya — about 6 occurrences62–58 Mya — about 9 occurrences58–55 Mya — about 17 occurrences55–51 Mya — about 32 occurrences51–48 Mya — about 32 occurrences48–44 Mya — about 50 occurrences44–41 Mya — about 51 occurrences41–38 Mya — about 140 occurrences38–34 Mya — about 49 occurrences34–31 Mya — about 49 occurrences31–27 Mya — about 49 occurrences27–24 Mya — about 42 occurrences24–21 Mya — about 42 occurrences21–17 Mya — about 87 occurrences17–14 Mya — about 89 occurrences14–10 Mya — about 82 occurrences10–6.8 Mya — about 123 occurrences6.8–3.4 Mya — about 281 occurrences3.4–0 Mya — about 172 occurrences93.9 Mya11.7 ka103 Mya0 Mya

1,421 occurrences of Cassidae 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

1,421 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

272 formations

Gurabo — 19.48°N, 71.09°WGurabo — 19.53°N, 71.20°WGurabo — 19.48°N, 70.98°WGurabo — 18.73°N, 71.00°WGurabo — 19.30°N, 70.50°WGurabo — 19.45°N, 70.70°WGurabo — 19.53°N, 71.33°WGurabo — 19.40°N, 70.72°WGurabo — 19.30°N, 71.67°WGurabo — 19.58°N, 71.05°WGurabo — 18.93°N, 71.62°WCercado — 19.47°N, 71.08°WCercado — 19.53°N, 71.20°WCercado — 19.53°N, 71.27°WCercado — 19.92°N, 71.57°WCercado — 19.30°N, 71.67°WCercado — 19.58°N, 71.04°WCercado — 18.93°N, 71.62°WCercado — 19.40°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 — 31.49°N, 93.47°WCook Mountain — 31.93°N, 92.64°WCook Mountain — 32.17°N, 88.83°WCook Mountain — 32.14°N, 89.00°WCook Mountain — 31.03°N, 95.63°WCook Mountain — 31.12°N, 95.90°WCook Mountain — 30.62°N, 96.56°WCook Mountain — 31.20°N, 95.73°WCook Mountain — 31.25°N, 95.72°WCook Mountain — 29.95°N, 97.14°WCook Mountain — 30.63°N, 96.54°WCook Mountain — 30.07°N, 97.08°WLlajas — 34.31°N, 118.69°WLlajas — 34.32°N, 118.63°WNancy Point — 9.06°N, 81.80°WNancy Point — 9.15°N, 81.95°WNancy Point — 9.14°N, 81.95°WMoodys Branch — 31.88°N, 88.68°WMoodys Branch — 32.30°N, 90.18°WMoodys Branch — 32.01°N, 92.00°WMoodys Branch — 31.26°N, 93.82°WMoodys Branch — 31.67°N, 92.89°WMoodys Branch — 33.86°N, 92.29°WMoodys Branch — 31.60°N, 92.80°WCayo Agua — 9.18°N, 82.05°WCayo Agua — 9.17°N, 82.04°WCayo Agua — 9.14°N, 82.01°WTermofourà — 45.05°N, 7.80°ETermofourà — 45.04°N, 7.77°EWeches — 30.00°N, 97.15°WWeches — 30.60°N, 96.61°WWeches — 31.30°N, 96.04°WWeches — 30.68°N, 96.58°WWeches — 31.21°N, 96.02°WWeches — 31.11°N, 96.28°WWeches — 31.35°N, 95.68°WWeches — 31.59°N, 94.84°WWeches — 31.25°N, 96.12°WWeches — 31.22°N, 96.06°WBowden — 17.88°N, 76.28°WByram — 32.01°N, 89.38°WByram — 32.18°N, 90.25°WByram — 32.32°N, 90.86°WByram — 32.48°N, 90.80°WByram — 32.41°N, 90.84°WByram — 32.12°N, 90.53°WReklaw — 30.88°N, 95.38°WReklaw — 30.11°N, 97.32°WReklaw — 30.01°N, 97.26°WReklaw — 30.80°N, 96.72°WReklaw — 30.00°N, 97.25°WChagres Sandstone — 9.60°N, 79.53°WChagres Sandstone — 9.33°N, 80.00°WChagres Sandstone — 9.17°N, 80.25°WChagres Sandstone — 9.17°N, 80.28°WChagres Sandstone — 9.21°N, 80.12°WKeasey — 45.75°N, 123.25°WKeasey — 45.72°N, 123.20°WKeasey — 45.74°N, 123.27°WGatun — 9.35°N, 79.81°WGatun — 9.35°N, 79.83°WGatun — 9.27°N, 79.92°WRed Bluff — 30.98°N, 88.73°WRed Bluff — 31.81°N, 88.69°WRed Bluff — 31.66°N, 88.66°WRed Bluff — 31.57°N, 88.04°WCantaure — 11.90°N, 69.84°WBaldissero — 45.03°N, 7.76°EBaldissero — 45.03°N, 7.75°EBlakeley — 47.59°N, 122.56°WBlakeley — 47.58°N, 122.48°WBlakeley — 48.16°N, 123.95°WBlakeley — 47.55°N, 122.34°WBlakeley — 47.57°N, 122.42°WBlakeley — 47.85°N, 122.10°WChipola — 30.44°N, 85.19°WChipola — 30.46°N, 85.16°WChipola — 30.50°N, 85.12°WEsmeraldas — 0.83°S, 77.53°WEsmeraldas — 0.95°N, 79.62°WEsmeraldas — 0.95°N, 79.74°WEsmeraldas — 1.00°N, 79.75°WEsmeraldas — 0.97°N, 79.65°WEsmeraldas — 0.85°N, 78.98°WGosport Sand — 31.52°N, 87.90°WGosport Sand — 31.54°N, 87.52°WGosport Sand — 31.50°N, 87.80°WGosport Sand — 31.57°N, 87.58°WMare — 10.00°N, 64.00°WMare — 10.61°N, 63.52°WMare — 10.64°N, 64.11°WShark Hole Point — 9.04°N, 81.75°WShark Hole Point — 9.06°N, 81.79°W

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The named rock units Cassidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 248 further formations hold fewer occurrences each and are not listed. 215 occurrences have no formation on record, which is common for older literature.

Cassidae and its relatives

Miocene

Where Cassidae and its relatives were recorded in the Miocene.

Found in the same rock

4,154 taxa

The Paleobiology Database records 616 sites for Cassidae, and this reads 240 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

298 references

Each of the 1,421 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. 286 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 content2

Picture of Cassidae

Credit
GrahamBould
Licence
Public Domain
Commercial use
the licence allows it

3D model

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

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 itTonnoidea through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Latreille 1825)