Pyramidellidae

Pyramidellidae, common name the pyram family, or pyramid shells, is a voluminous taxonomic family of mostly small and minute ectoparasitic sea snails, marine heterobranch gastropod molluscs. The great majority of species of pyrams are micromolluscs.

Pyramidellidae

Uncredited · 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
PyramidelloideaPBDB
Diet
carnivorePBDB
Life habit
epifaunalPBDB
Motility
actively mobilePBDB
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 241 million years on record.

The record covers at least 241.464 Mya to 11.7 ka. No occurrence read is dated outside 247 Mya to 0 Mya.

Early Triassic — about 0 of 2818 occurrencesMiddle Triassic — about 12 of 2818 occurrencesLate Triassic — about 9 of 2818 occurrencesLate TriassicEarly Jurassic — about 7 of 2818 occurrencesEarly JurassicMiddle Jurassic — about 0 of 2818 occurrencesLate Jurassic — about 0 of 2818 occurrencesEarly Cretaceous — about 4 of 2818 occurrencesEarly CretaceousLate Cretaceous — about 113 of 2818 occurrencesLate CretaceousPaleocene — about 93 of 2818 occurrencesEocene — about 509 of 2818 occurrencesEoceneOligocene — about 105 of 2818 occurrencesMiocene — about 875 of 2818 occurrencesPliocene — about 348 of 2818 occurrencesPleistocene — about 665 of 2818 occurrences252–244 Mya — about 6 occurrences244–235 Mya — about 6 occurrences235–227 Mya — about 1.0 occurrences227–218 Mya — about 1.0 occurrences218–210 Mya — about 1.0 occurrences210–202 Mya — about 6 occurrences202–193 Mya — about 0.5 occurrences193–185 Mya — about 5 occurrences185–176 Mya — about 1 occurrence176–168 Mya — about 0.6 occurrences118–109 Mya — about 0.3 occurrences109–101 Mya — about 4 occurrences101–92 Mya — about 0.6 occurrences92–84 Mya — about 0.5 occurrences84–76 Mya — about 12 occurrences76–67 Mya — about 82 occurrences67–59 Mya — about 87 occurrences59–50 Mya — about 117 occurrences50–42 Mya — about 153 occurrences42–34 Mya — about 267 occurrences34–25 Mya — about 94 occurrences25–17 Mya — about 185 occurrences17–8.4 Mya — about 618 occurrences8.4–0 Mya — about 1169 occurrences241.464 Mya11.7 ka252 Mya0 Mya

2,818 occurrences of Pyramidellidae 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

2,818 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

245 formations

Palos 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 — 33.74°N, 118.28°WCook Mountain — 32.32°N, 89.03°WCook Mountain — 32.17°N, 88.83°WCook Mountain — 32.32°N, 89.16°WCook Mountain — 32.04°N, 88.73°WCook Mountain — 30.62°N, 96.53°WCook Mountain — 31.32°N, 95.46°WCook Mountain — 32.51°N, 92.12°WCook Mountain — 31.35°N, 93.65°WCook Mountain — 31.49°N, 93.47°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 — 31.35°N, 95.52°WCook Mountain — 31.11°N, 96.28°WCook Mountain — 30.07°N, 97.08°WCook Mountain — 29.99°N, 97.09°WMare — 10.00°N, 64.00°WMare — 10.00°N, 71.00°WMare — 10.61°N, 63.52°WMare — 10.64°N, 64.11°WSan Pedro Sand — 33.74°N, 118.28°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°WSelsey — 51.02°N, 1.32°WSelsey — 50.73°N, 0.78°WProvidence — 31.76°N, 85.13°WProvidence — 31.73°N, 85.12°WProvidence — 31.77°N, 85.15°WProvidence — 31.82°N, 84.97°WProvidence — 31.89°N, 85.21°WProvidence — 31.87°N, 85.72°WRifle Butts — 45.03°S, 170.02°ERifle Butts — 45.12°S, 170.93°ERifle Butts — 45.08°S, 170.95°EPalos Verdes — 33.63°N, 117.90°WGatun — 9.38°N, 79.82°WJames City — 35.28°N, 76.65°WJames City — 35.04°N, 76.99°WRipley — 34.73°N, 88.95°WRipley — 34.49°N, 89.01°WRipley — 34.93°N, 88.52°WRipley — 35.23°N, 88.61°WRipley — 35.32°N, 88.42°WRipley — 35.29°N, 88.60°WGosport Sand — 31.54°N, 87.52°WGosport Sand — 31.55°N, 87.91°WLa Meseta — 64.23°S, 56.65°WLa Meseta — 64.22°S, 56.61°WLa Meseta — 64.26°S, 56.69°WUnnamed — 33.24°N, 119.51°WWerder — 52.98°N, 9.06°EMoodys Branch — 32.85°N, 90.41°WMoodys Branch — 32.95°N, 90.17°WMoodys Branch — 32.01°N, 92.00°WMoodys Branch — 32.33°N, 90.15°WMoodys Branch — 31.88°N, 88.69°WMoodys Branch — 32.17°N, 88.83°WMoodys Branch — 31.66°N, 92.90°WMoodys Branch — 32.98°N, 90.30°WWeches — 30.67°N, 96.37°WWeches — 30.00°N, 97.15°WWeches — 30.23°N, 97.52°WWeches — 31.21°N, 96.02°WWeches — 30.69°N, 96.58°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°WEscudo de Veraguas — 9.09°N, 81.55°WEscudo de Veraguas — 9.10°N, 81.57°WBreda — 51.95°N, 6.75°EDry Creek Sands — 34.70°S, 138.62°EDry Creek Sands — 34.75°S, 138.68°EDry Creek Sands — 34.91°S, 138.56°EOlcese — 35.45°N, 118.87°WOlcese — 35.45°N, 118.87°WBowden — 17.88°N, 76.28°WCoralline Crag — 52.75°N, 1.53°ECoralline Crag — 52.07°N, 1.47°ECoralline Crag — 52.03°N, 1.38°ECoralline Crag — 52.07°N, 1.35°E

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The named rock units Pyramidellidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 221 further formations hold fewer occurrences each and are not listed. 797 occurrences have no formation on record, which is common for older literature.

Pyramidellidae and its relatives

Miocene

Where Pyramidellidae and its relatives were recorded in the Miocene.

Found in the same rock

2,768 taxa

The Paleobiology Database records at least 622 sites for Pyramidellidae, 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

305 references

Each of the 2,818 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. 293 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 Pyramidellidae

Credit
nobody named on the record
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Pyramidellidae 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 itPyramidelloidea through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Gray 1840