Trigonostoma

Trigonostoma is a genus of sea snails, marine gastropod mollusks in the family Cancellariidae, the nutmeg snails.

Trigonostoma

Shellnut · 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
CancellariidaePBDB
Diet
carnivorePBDB, for Cancellariidae
Life habit
epifaunalPBDB, for Cancellariidae
Motility
actively mobilePBDB, for Cancellariidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 65 million years on record.

The record covers at least 66 Mya to 129 ka. No occurrence read is dated outside 72.2 Mya to 11.7 ka.

Late Cretaceous — about 1 of 258 occurrencesLate CretaceousPaleocene — about 1 of 258 occurrencesPaleoceneEocene — about 170 of 258 occurrencesEoceneOligocene — about 5 of 258 occurrencesOligoceneMiocene — about 54 of 258 occurrencesMiocenePliocene — about 22 of 258 occurrencesPleistocene — about 5 of 258 occurrences74–71 Mya — about 0.2 occurrences71–69 Mya — about 0.4 occurrences69–66 Mya — about 0.4 occurrences66–64 Mya — about 0.0 occurrences64–61 Mya — about 0.1 occurrences61–59 Mya — about 0.9 occurrences56–54 Mya — about 4 occurrences54–52 Mya — about 5 occurrences52–49 Mya — about 5 occurrences49–47 Mya — about 10 occurrences47–44 Mya — about 13 occurrences44–42 Mya — about 13 occurrences42–39 Mya — about 65 occurrences39–37 Mya — about 55 occurrences37–34 Mya — about 1 occurrence34–32 Mya — about 0.8 occurrences32–29 Mya — about 0.7 occurrences29–27 Mya — about 0.9 occurrences27–25 Mya — about 2 occurrences25–22 Mya — about 4 occurrences22–20 Mya — about 9 occurrences20–17 Mya — about 9 occurrences17–15 Mya — about 10 occurrences15–12 Mya — about 15 occurrences12–9.8 Mya — about 4 occurrences9.8–7.4 Mya — about 3 occurrences7.4–4.9 Mya — about 3 occurrences4.9–2.5 Mya — about 20 occurrences2.5–0 Mya — about 5 occurrences66 Mya129 ka74 Mya0 Mya

258 occurrences of Trigonostoma on record, most of them in the Eocene. 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

258 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

50 formations

Cook Mountain — 31.25°N, 95.73°WCook Mountain — 32.04°N, 88.73°WCook Mountain — 32.32°N, 89.03°WCook Mountain — 30.67°N, 96.37°WCook Mountain — 30.90°N, 96.39°WCook Mountain — 30.67°N, 97.22°WCook Mountain — 32.51°N, 92.12°WCook Mountain — 30.36°N, 96.82°WCook Mountain — 32.32°N, 89.16°WCook Mountain — 31.12°N, 95.90°WCook Mountain — 30.62°N, 96.56°WCook Mountain — 31.20°N, 95.73°WCook Mountain — 29.95°N, 97.14°WCook Mountain — 30.63°N, 96.54°WCook Mountain — 30.07°N, 97.08°WWeches — 30.67°N, 96.37°WWeches — 30.00°N, 97.15°WWeches — 30.65°N, 96.32°WWeches — 29.80°N, 97.65°WWeches — 30.68°N, 96.58°WWeches — 31.21°N, 96.02°WWeches — 31.11°N, 96.28°WWeches — 31.00°N, 96.83°WWeches — 31.59°N, 94.84°WWeches — 31.25°N, 96.12°WWeches — 31.22°N, 96.06°WLisbon — 31.76°N, 88.10°WLisbon — 31.84°N, 88.25°WLisbon — 31.50°N, 87.80°WLisbon — 31.53°N, 87.50°WLisbon — 31.82°N, 88.24°WLisbon — 31.55°N, 87.91°WGosport Sand — 31.54°N, 87.52°WGosport Sand — 31.55°N, 87.91°WReklaw — 30.88°N, 95.38°WReklaw — 30.11°N, 97.32°WReklaw — 30.01°N, 97.26°WCrockett — 30.63°N, 96.54°WCrockett — 30.67°N, 96.37°WTamiami — 28.29°N, 81.41°WTamiami — 27.33°N, 82.53°WTamiami — 25.90°N, 81.30°WMcBean — 33.49°N, 80.86°WStone City — 30.53°N, 96.69°WKama — 19.62°N, 95.30°EKama — 19.50°N, 95.38°EWerder — 52.98°N, 9.06°ETermofourà — 45.05°N, 7.80°ERateginskaya — 62.50°N, 165.00°EYorktown — 37.23°N, 76.51°WYorktown — 34.90°N, 78.05°WYorktown — 37.02°N, 76.58°WBuckingham — 25.70°N, 80.40°WYegua — 30.63°N, 96.51°WShoal River — 30.72°N, 86.12°WArcadia — 27.89°N, 82.48°WNari — 26.36°N, 67.86°ENari — 26.14°N, 66.79°EGatun — 9.34°N, 79.80°WGatun — 9.39°N, 79.82°WHatchetigbee Bluff — 32.08°N, 88.22°WHatchetigbee Bluff — 31.93°N, 87.75°WSabinetown Bluff — 31.40°N, 93.71°WMoodys Branch — 31.67°N, 92.89°WMoodys Branch — 31.60°N, 92.80°WBaldissero — 45.03°N, 7.76°E

Loading coastlines…

The named rock units Trigonostoma has been recovered from, largest first. Drawn where the rock is now, not where it formed. 26 further formations hold fewer occurrences each and are not listed. 29 occurrences have no formation on record, which is common for older literature.

Trigonostoma and its relatives

Eocene

Where Trigonostoma and its relatives were recorded in the Eocene.

Found in the same rock

1,809 taxa

The Paleobiology Database records 104 sites for Trigonostoma, 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

56 references

Each of the 258 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. 44 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 content1

Picture of Trigonostoma

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

No 3D scan of Trigonostoma 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 itCancellariidae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Blainville 1827)