Rissoidae

Rissoidae is a large family of sea snails. Members of the Rissoidae are very small in size and possess an operculum.

Rissoidae

Harold John Finlay (1901-1951) · 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
RissooideaPBDB
Diet
grazerPBDB
Life habit
epifaunalPBDB
Motility
actively mobilePBDB
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 236 million years on record.

The record covers at least 237 Mya to 11.7 ka. No occurrence read is dated outside 241.464 Mya to 0 Mya.

Middle Triassic — about 2 of 1009 occurrencesLate Triassic — about 1 of 1009 occurrencesLate TriassicEarly Jurassic — about 1 of 1009 occurrencesEarly JurassicMiddle Jurassic — about 23 of 1009 occurrencesLate Jurassic — about 5 of 1009 occurrencesEarly Cretaceous — about 31 of 1009 occurrencesEarly CretaceousLate Cretaceous — about 44 of 1009 occurrencesLate CretaceousPaleocene — about 20 of 1009 occurrencesEocene — about 72 of 1009 occurrencesEoceneOligocene — about 99 of 1009 occurrencesMiocene — about 238 of 1009 occurrencesPliocene — about 123 of 1009 occurrencesPleistocene — about 326 of 1009 occurrences246–238 Mya — about 2 occurrences238–230 Mya — about 1 occurrence230–222 Mya — about 0.3 occurrences189–181 Mya — about 0.9 occurrences181–172 Mya — about 2 occurrences172–164 Mya — about 16 occurrences164–156 Mya — about 6 occurrences156–148 Mya — about 3 occurrences148–140 Mya — about 1 occurrence140–131 Mya — about 26 occurrences131–123 Mya — about 2 occurrences123–115 Mya — about 1 occurrence115–107 Mya — about 1 occurrence107–99 Mya — about 1 occurrence90–82 Mya — about 2 occurrences82–74 Mya — about 2 occurrences74–66 Mya — about 41 occurrences66–57 Mya — about 18 occurrences57–49 Mya — about 15 occurrences49–41 Mya — about 30 occurrences41–33 Mya — about 37 occurrences33–25 Mya — about 75 occurrences25–16 Mya — about 77 occurrences16–8.2 Mya — about 147 occurrences8.2–0 Mya — about 501 occurrences237 Mya11.7 ka246 Mya0 Mya

1,009 occurrences of Rissoidae on record, most of them in the Pleistocene. 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

1,009 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

137 formations

Unnamed — 33.24°N, 119.51°WUnnamed — 33.24°N, 119.55°WFalun de Jeurs — 48.48°N, 2.23°EProvidence — 31.84°N, 85.22°WProvidence — 31.82°N, 84.97°WProvidence — 31.71°N, 85.09°WOrtovero Clay — 44.10°N, 8.23°EBowden — 17.88°N, 76.28°WMare — 10.00°N, 64.00°WMare — 10.61°N, 63.52°WMare — 10.64°N, 64.11°WLillo — 51.25°N, 4.28°EFaluns de la Touraine — 47.40°N, 1.23°EQuaternary terrace — 33.75°N, 118.33°WQuaternary terrace — 33.76°N, 118.35°WRipley — 35.23°N, 88.61°WRipley — 34.49°N, 89.01°WRipley — 34.73°N, 88.95°WRipley — 35.32°N, 88.42°WRipley — 35.29°N, 88.60°WTermofourà — 45.05°N, 7.80°ECorsicana Marl — 32.53°N, 96.27°WCorsicana Marl — 32.20°N, 96.29°WCorsicana Marl — 31.40°N, 96.73°WCorsicana Marl — 30.37°N, 97.46°WCorsicana Marl — 30.37°N, 97.45°WCorsicana Marl — 30.23°N, 97.52°WEscudo de Veraguas — 9.09°N, 81.55°WEscudo de Veraguas — 9.10°N, 81.57°WWerder — 52.98°N, 9.06°ELomita Marl — 33.75°N, 118.30°WLomita Marl — 33.74°N, 118.29°WCook Mountain — 31.03°N, 95.63°WCook Mountain — 31.20°N, 95.73°WCook Mountain — 30.63°N, 96.55°WCook Mountain — 30.63°N, 96.54°WNorwich Crag — 52.58°N, 1.38°EFalun d'Auvers-Saint-Georges — 47.40°N, 4.45°EFalun de Morigny — 48.45°N, 2.20°EGurabo — 19.48°N, 71.09°WGurabo — 19.40°N, 70.72°WGurabo — 19.58°N, 71.05°WGurabo — 19.30°N, 71.67°WGurabo — 19.51°N, 71.19°WShark Hole Point — 9.04°N, 81.75°WDry Creek Sands — 34.75°S, 138.68°EDry Creek Sands — 34.89°S, 138.56°ERifle Butts — 45.03°S, 170.02°ERifle Butts — 45.12°S, 170.93°EFalun de Saucats — 44.66°N, 0.57°W

Loading coastlines…

The named rock units Rissoidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 113 further formations hold fewer occurrences each and are not listed. 510 occurrences have no formation on record, which is common for older literature.

Rissoidae and its relatives

Pleistocene

Where Rissoidae and its relatives were recorded in the Pleistocene.

Found in the same rock

3,647 taxa

The Paleobiology Database records 386 sites for Rissoidae, 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

193 references

Each of the 1,009 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. 181 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 Rissoidae

Credit
Harold John Finlay (1901-1951)
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Rissoidae was found in MorphoSource and Sketchfab.

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 itRissooidea through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Gray 1847