Acirsa (Hemiacirsa)

Acirsa (Hemiacirsa)

Stichting Observation International · CC BY-NC 4.0 · via GBIF. 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
AcirsaPBDB
Diet
carnivorePBDB, for Epitoniidae
Life habit
low-level epifaunalPBDB, for Epitoniidae
Motility
slow-movingPBDB, for Epitoniidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 118 million years on record.

The record covers at least 121.4 Mya to 2.58 Mya. No occurrence read is dated outside 132.6 Mya to 1.8 Mya.

Early Cretaceous — about 5 of 71 occurrencesEarly CretaceousLate Cretaceous — about 32 of 71 occurrencesLate CretaceousPaleocene — about 7 of 71 occurrencesEocene — about 9 of 71 occurrencesEoceneOligocene — about 0 of 71 occurrencesMiocene — about 17 of 71 occurrencesMiocenePliocene — about 0 of 71 occurrencesPleistocene — about 1 of 71 occurrences135–131 Mya — about 0.2 occurrences131–126 Mya — about 0.4 occurrences126–122 Mya — about 1 occurrence122–117 Mya — about 1 occurrence117–113 Mya — about 2 occurrences86–81 Mya — about 0.7 occurrences81–77 Mya — about 1 occurrence77–72 Mya — about 2 occurrences72–68 Mya — about 21 occurrences68–63 Mya — about 9 occurrences63–59 Mya — about 5 occurrences50–45 Mya — about 0.4 occurrences45–41 Mya — about 2 occurrences41–36 Mya — about 7 occurrences27–23 Mya — about 0.2 occurrences23–18 Mya — about 3 occurrences18–14 Mya — about 7 occurrences14–9.0 Mya — about 6 occurrences9.0–4.5 Mya — about 1 occurrence4.5–0 Mya — about 1 occurrence121.4 Mya2.58 Mya135 Mya0 Mya

71 occurrences of Acirsa (Hemiacirsa) on record, most of them in the Late Cretaceous. 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

71 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

22 formations

Ripley — 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°WProvidence — 31.84°N, 85.22°WProvidence — 31.76°N, 85.13°WProvidence — 31.73°N, 85.12°WProvidence — 31.82°N, 84.97°WSevern — 38.89°N, 76.85°WSevern — 38.92°N, 76.85°WCook Mountain — 32.51°N, 92.12°WCook Mountain — 31.20°N, 95.73°WCook Mountain — 30.63°N, 96.54°WCook Mountain — 30.62°N, 96.56°WLellinge Greensand — 55.71°N, 12.60°EHiraiga — 39.93°N, 141.95°EGosport Sand — 31.54°N, 87.52°WGosport Sand — 31.55°N, 87.91°WNacatoch Sand — 32.59°N, 96.31°WPeedee — 35.77°N, 78.64°WAgatdal — 70.58°N, 53.10°WCoffee Sand — 34.45°N, 88.58°WHijochi — 39.01°N, 141.73°EGram — 55.28°N, 9.00°ECrockett — 31.40°N, 93.70°WWerder — 52.98°N, 9.06°EKangilia — 70.33°N, 53.08°WFaluns de la Touraine — 47.40°N, 1.23°ESabbie di Asti — 43.32°N, 11.33°EKorytnica Clays — 50.67°N, 20.52°EBreda — 51.95°N, 6.75°EKemp Clay — 30.23°N, 97.52°WKincaid — 31.29°N, 96.72°W

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The named rock units Acirsa (Hemiacirsa) has been recovered from, largest first. Drawn where the rock is now, not where it formed. 16 occurrences have no formation on record, which is common for older literature.

Acirsa (Hemiacirsa) and its relatives

Late Cretaceous

Where Acirsa (Hemiacirsa) and its relatives were recorded in the Late Cretaceous.

Found in the same rock

1,236 taxa

The Paleobiology Database records 60 sites for Acirsa (Hemiacirsa), 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

23 references

Each of the 71 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. 11 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 Acirsa (Hemiacirsa)

Source
GBIF
Credit
Stichting Observation International
Licence
CC BY-NC 4.0
Commercial use
the licence does not allow it

No 3D scan of Acirsa (Hemiacirsa) 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.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itAcirsa through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (de Boury 1890)