Ancilla

Ancilla, common name the ancillas, is a genus of sea snails, marine gastropod mollusks in the family Ancillariidae.

Ancilla

Iranshahi.Amir Ali · CC BY 4.0 · 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
OlividaePBDB
Diet
carnivorePBDB, for Olividae
Life habit
epifaunalPBDB, for Olividae
Motility
actively mobilePBDB, for Olividae
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 0 Mya.

Late Cretaceous — about 17 of 346 occurrencesLate CretaceousPaleocene — about 21 of 346 occurrencesPaleoceneEocene — about 198 of 346 occurrencesEoceneOligocene — about 20 of 346 occurrencesOligoceneMiocene — about 50 of 346 occurrencesMiocenePliocene — about 19 of 346 occurrencesPleistocene — about 20 of 346 occurrences74–71 Mya — about 3 occurrences71–69 Mya — about 7 occurrences69–66 Mya — about 7 occurrences66–64 Mya — about 3 occurrences64–61 Mya — about 3 occurrences61–59 Mya — about 11 occurrences59–56 Mya — about 4 occurrences56–54 Mya — about 6 occurrences54–52 Mya — about 7 occurrences52–49 Mya — about 7 occurrences49–47 Mya — about 15 occurrences47–44 Mya — about 21 occurrences44–42 Mya — about 21 occurrences42–39 Mya — about 54 occurrences39–37 Mya — about 49 occurrences37–34 Mya — about 16 occurrences34–32 Mya — about 6 occurrences32–29 Mya — about 4 occurrences29–27 Mya — about 4 occurrences27–25 Mya — about 6 occurrences25–22 Mya — about 6 occurrences22–20 Mya — about 7 occurrences20–17 Mya — about 11 occurrences17–15 Mya — about 9 occurrences15–12 Mya — about 5 occurrences12–9.8 Mya — about 6 occurrences9.8–7.4 Mya — about 6 occurrences7.4–4.9 Mya — about 7 occurrences4.9–2.5 Mya — about 18 occurrences2.5–0 Mya — about 20 occurrences66 Mya129 ka74 Mya0 Mya

346 occurrences of Ancilla 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

346 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

98 formations

Cook Mountain — 32.35°N, 92.72°WCook Mountain — 30.90°N, 96.39°WCook Mountain — 32.32°N, 89.16°WCook Mountain — 31.03°N, 95.63°WCook Mountain — 31.14°N, 95.92°WCook Mountain — 31.19°N, 95.84°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, 96.55°WCook Mountain — 30.63°N, 96.54°WLisbon — 31.53°N, 87.60°WLisbon — 31.84°N, 88.25°WLisbon — 31.50°N, 87.80°WLisbon — 31.76°N, 88.10°WLisbon — 31.32°N, 86.73°WLisbon — 31.30°N, 86.48°WLisbon — 31.82°N, 88.24°WWeches — 31.25°N, 96.12°WWeches — 31.61°N, 94.64°WWeches — 31.56°N, 94.50°WWeches — 31.21°N, 96.02°WWeches — 30.69°N, 96.58°WWeches — 31.11°N, 96.28°WWeches — 31.53°N, 94.41°WWeches — 31.34°N, 95.68°WWeches — 31.00°N, 96.83°WWeches — 31.59°N, 94.84°WWeches — 30.01°N, 97.16°WWeches — 31.22°N, 96.06°WGosport Sand — 31.52°N, 87.90°WGosport Sand — 31.54°N, 87.52°WGosport Sand — 31.50°N, 87.80°WGosport Sand — 31.53°N, 87.57°WGosport Sand — 31.13°N, 87.93°WEugene — 44.06°N, 123.22°WEugene — 44.05°N, 123.09°WEugene — 44.05°N, 123.02°WSelsey — 50.73°N, 0.78°WTermofourà — 45.05°N, 7.80°ETermofourà — 45.04°N, 7.77°ELellinge Greensand — 55.67°N, 12.58°ELellinge Greensand — 55.48°N, 10.47°EReklaw — 30.88°N, 95.38°WReklaw — 30.11°N, 97.32°WReklaw — 30.00°N, 97.25°WReklaw — 30.00°N, 97.25°WReklaw — 30.81°N, 96.65°WBarton Beds — 50.67°N, 1.57°WBarton Beds — 51.28°N, 0.63°WBarton Beds — 50.78°N, 1.73°WBarton Beds — 50.74°N, 1.69°WSables a Nummulites variolarius — 49.25°N, 2.50°EOwl Creek — 34.17°N, 88.89°WOwl Creek — 34.88°N, 88.87°WOwl Creek — 34.75°N, 88.93°WProvidence — 31.73°N, 85.12°WProvidence — 31.77°N, 85.15°WPirabas — 0.80°S, 47.13°WPirabas — 0.48°S, 48.17°WCayo Agua — 9.18°N, 82.05°WCayo Agua — 9.17°N, 82.04°WCilanang — 7.49°S, 110.00°ECilanang — 7.01°S, 107.33°EPleito — 34.99°N, 119.19°WNanggulan — 7.73°S, 110.18°EMcBean — 33.50°N, 80.89°WMcBean — 33.56°N, 80.09°WSevern — 38.89°N, 76.85°WSevern — 38.92°N, 76.85°WCorsicana Marl — 32.22°N, 96.31°WCorsicana Marl — 30.37°N, 97.46°WCorsicana Marl — 30.23°N, 97.52°WStone City — 30.53°N, 96.69°WShimajiri — 26.13°N, 127.72°EShimajiri — 26.13°N, 127.78°EDry Creek Sands — 34.75°S, 138.68°EDry Creek Sands — 34.91°S, 138.56°EDry Creek Sands — 34.85°S, 138.60°E

Loading coastlines…

The named rock units Ancilla has been recovered from, largest first. Drawn where the rock is now, not where it formed. 74 further formations hold fewer occurrences each and are not listed. 57 occurrences have no formation on record, which is common for older literature.

Ancilla and its relatives

Eocene

Where Ancilla and its relatives were recorded in the Eocene.

Found in the same rock

3,136 taxa

The Paleobiology Database records 231 sites for Ancilla, 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

103 references

Each of the 346 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. 91 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 Ancilla

Credit
Iranshahi.Amir Ali
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan of Ancilla 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 itOlividae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Lamarck 1799)