Potamididae

Potamididae, common name potamidids are a family of small to large brackish water snails that live on mud flats, mangroves and similar habitats. They are amphibious gastropod molluscs in the superfamily Cerithioidea.

Potamididae

Christoph Kühne · CC BY 2.0 · 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
Also called
horn snailPBDB
Sits inside
CerithioideaPBDB
Diet
grazerPBDB
Life habit
epifaunalPBDB
Motility
actively mobilePBDB
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 259 million years on record.

The record covers at least 259.857 Mya to 11.7 ka. No occurrence read is dated outside 264.28 Mya to 0 Mya.

Permian — about 2 of 1262 occurrencesEarly Triassic — about 0 of 1262 occurrencesMiddle Triassic — about 0 of 1262 occurrencesLate Triassic — about 0 of 1262 occurrencesEarly Jurassic — about 0 of 1262 occurrencesMiddle Jurassic — about 0 of 1262 occurrencesLate Jurassic — about 0 of 1262 occurrencesEarly Cretaceous — about 26 of 1262 occurrencesEarly CretaceousLate Cretaceous — about 64 of 1262 occurrencesLate CretaceousPaleocene — about 42 of 1262 occurrencesEocene — about 455 of 1262 occurrencesOligocene — about 140 of 1262 occurrencesMiocene — about 362 of 1262 occurrencesPliocene — about 77 of 1262 occurrencesPleistocene — about 90 of 1262 occurrences270–261 Mya — about 2 occurrences261–252 Mya — about 0.3 occurrences135–126 Mya — about 11 occurrences126–117 Mya — about 7 occurrences117–108 Mya — about 5 occurrences108–99 Mya — about 3 occurrences99–90 Mya — about 5 occurrences90–81 Mya — about 18 occurrences81–72 Mya — about 29 occurrences72–63 Mya — about 19 occurrences63–54 Mya — about 96 occurrences54–45 Mya — about 220 occurrences45–36 Mya — about 139 occurrences36–27 Mya — about 145 occurrences27–18 Mya — about 125 occurrences18–9.0 Mya — about 221 occurrences9.0–0 Mya — about 215 occurrences259.857 Mya11.7 ka270 Mya0 Mya

1,262 occurrences of Potamididae 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

1,262 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

225 formations

Castilletes — 11.85°N, 71.33°WCastilletes — 11.93°N, 71.34°WCastilletes — 11.96°N, 71.28°WCastilletes — 11.85°N, 71.37°WFalun de Jeurs — 48.48°N, 2.23°EJimol — 11.85°N, 71.33°WJimol — 11.94°N, 71.36°WJimol — 11.98°N, 71.31°WJimol — 11.96°N, 71.43°WJalama — 34.51°N, 120.42°WHeadon Beds — 50.72°N, 1.59°WHeadon Beds — 50.67°N, 1.08°WHeadon Beds — 50.63°N, 1.55°WKunugidaira — 36.83°N, 145.75°EKunugidaira — 37.00°N, 140.75°EKunugidaira — 36.79°N, 140.74°ECoffee Sand — 34.26°N, 88.70°WCoffee Sand — 32.62°N, 89.53°WCoffee Sand — 34.45°N, 88.58°WPalos Verdes Sand — 33.80°N, 118.16°WPalos Verdes Sand — 33.99°N, 118.45°WPalos Verdes Sand — 33.60°N, 117.88°WPalos Verdes Sand — 33.71°N, 118.27°WPalos Verdes Sand — 33.66°N, 117.94°WCzarnorzeki Beds — 49.77°N, 21.97°ECzarnorzeki Beds — 49.77°N, 21.93°EFlournoy — 43.28°N, 123.08°WFlournoy — 43.02°N, 123.92°WBudden Canyon — 40.47°N, 122.61°WPucangan — 7.49°S, 110.00°EChipola — 30.44°N, 85.19°WChipola — 30.46°N, 85.16°WChipola — 30.26°N, 85.17°WMatilija — 34.48°N, 119.30°WMatilija — 34.68°N, 119.28°WSables a Nummulites variolarius — 49.25°N, 2.50°ETainohata — 34.75°N, 135.17°ECaballas — 14.94°S, 75.48°WCarbonera — 6.80°N, 73.58°WCarbonera — 8.33°N, 73.67°WCulebra — 9.06°N, 79.66°WCulebra — 9.03°N, 79.64°WCilanang — 7.49°S, 110.00°ECilanang — 7.01°S, 107.33°ECilanang — 6.73°S, 108.67°ENyalindung — 7.49°S, 110.00°ENyalindung — 7.00°S, 106.63°ENyalindung — 7.48°S, 108.42°EYoshino — 35.10°N, 134.19°EBorgloon — 50.80°N, 5.33°EBorgloon — 50.82°N, 5.46°EBorgloon — 51.00°N, 4.50°EFalun de Morigny — 48.45°N, 2.20°E

Loading coastlines…

The named rock units Potamididae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 201 further formations hold fewer occurrences each and are not listed. 469 occurrences have no formation on record, which is common for older literature.

Potamididae and its relatives

Eocene

Where Potamididae and its relatives were recorded in the Eocene.

Found in the same rock

3,605 taxa

The Paleobiology Database records 573 sites for Potamididae, 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

277 references

Each of the 1,262 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. 265 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 Potamididae

Credit
Christoph Kühne
Licence
CC BY 2.0
Commercial use
the licence allows it

3D model

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

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 itCerithioidea through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Adams and Adams 1854)