Cucullaea

The false ark shells (Cucullaea) are a small genus of marine bivalve molluscs related to the ark clams. The genus is the only member of the family Cucullaeidae.

Cucullaea

Shellnut · CC BY-SA 3.0 · 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
CucullaeidaePBDB
Diet
suspension feederPBDB
Life habit
infaunalPBDB
Motility
facultatively mobilePBDB
Vision
limitedPBDB, for Cucullaeidae

Time the record covers

At least 358 million years on record.

The record covers at least 358.86 Mya to 129 ka. No occurrence read is dated outside 365.2 Mya to 0 Mya.

Devonian — about 2 of 1454 occurrencesCarboniferous — about 0 of 1454 occurrencesPermian — about 0 of 1454 occurrencesEarly Triassic — about 0 of 1454 occurrencesMiddle Triassic — about 6 of 1454 occurrencesLate Triassic — about 4 of 1454 occurrencesLate TriassicEarly Jurassic — about 84 of 1454 occurrencesMiddle Jurassic — about 41 of 1454 occurrencesLate Jurassic — about 59 of 1454 occurrencesEarly Cretaceous — about 152 of 1454 occurrencesEarly CretaceousLate Cretaceous — about 603 of 1454 occurrencesLate CretaceousPaleocene — about 304 of 1454 occurrencesEocene — about 79 of 1454 occurrencesOligocene — about 32 of 1454 occurrencesMiocene — about 69 of 1454 occurrencesPliocene — about 11 of 1454 occurrencesPleistocene — about 7 of 1454 occurrences373–360 Mya — about 2 occurrences360–348 Mya — about 0.4 occurrences248–236 Mya — about 7 occurrences236–224 Mya — about 2 occurrences224–211 Mya — about 0.5 occurrences211–199 Mya — about 4 occurrences199–186 Mya — about 28 occurrences186–174 Mya — about 55 occurrences174–161 Mya — about 39 occurrences161–149 Mya — about 49 occurrences149–137 Mya — about 25 occurrences137–124 Mya — about 53 occurrences124–112 Mya — about 52 occurrences112–99 Mya — about 40 occurrences99–87 Mya — about 112 occurrences87–75 Mya — about 120 occurrences75–62 Mya — about 507 occurrences62–50 Mya — about 165 occurrences50–37 Mya — about 50 occurrences37–25 Mya — about 46 occurrences25–12 Mya — about 64 occurrences12–0 Mya — about 33 occurrences358.86 Mya129 ka373 Mya0 Mya

1,454 occurrences of Cucullaea on record, most of them in the Late Cretaceous. 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

1,454 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

270 formations

Prairie Bluff — 34.51°N, 88.92°WPrairie Bluff — 34.25°N, 88.97°WPrairie Bluff — 34.24°N, 89.00°WPrairie Bluff — 33.90°N, 88.98°WPrairie Bluff — 33.79°N, 88.97°WPrairie Bluff — 33.79°N, 88.91°WPrairie Bluff — 33.73°N, 88.91°WPrairie Bluff — 33.52°N, 88.84°WPrairie Bluff — 33.15°N, 88.67°WPrairie Bluff — 33.07°N, 88.61°WPrairie Bluff — 33.05°N, 88.56°WPrairie Bluff — 32.91°N, 88.51°WPrairie Bluff — 34.48°N, 88.98°WPrairie Bluff — 32.73°N, 88.30°WPrairie Bluff — 32.74°N, 88.36°WPrairie Bluff — 32.70°N, 88.17°WPrairie Bluff — 32.61°N, 88.24°WPrairie Bluff — 32.49°N, 88.10°WPrairie Bluff — 32.43°N, 88.04°WPrairie Bluff — 32.39°N, 87.92°WPrairie Bluff — 32.31°N, 87.80°WPrairie Bluff — 32.23°N, 87.50°WPrairie Bluff — 32.14°N, 87.42°WPrairie Bluff — 32.07°N, 87.33°WPrairie Bluff — 32.04°N, 87.26°WPrairie Bluff — 32.05°N, 86.81°WPrairie Bluff — 32.05°N, 86.81°WPrairie Bluff — 31.95°N, 86.70°WPrairie Bluff — 32.00°N, 86.48°WPrairie Bluff — 31.98°N, 86.00°WPrairie Bluff — 31.99°N, 85.92°WKincaid — 31.28°N, 96.98°WKincaid — 30.80°N, 96.95°WKincaid — 31.17°N, 96.83°WKincaid — 31.67°N, 96.47°WKincaid — 30.33°N, 97.37°WKincaid — 29.27°N, 98.90°WKincaid — 32.43°N, 96.22°WKincaid — 31.12°N, 96.80°WKincaid — 30.08°N, 97.50°WKincaid — 32.98°N, 95.93°WKincaid — 33.13°N, 96.10°WKincaid — 32.58°N, 96.30°WKincaid — 28.71°N, 100.50°WKincaid — 30.23°N, 97.52°WKincaid — 29.89°N, 97.67°WKincaid — 29.33°N, 99.28°WKincaid — 29.21°N, 99.79°WKincaid — 29.16°N, 99.57°WKincaid — 29.33°N, 99.81°WKincaid — 28.44°N, 100.25°WKincaid — 31.31°N, 96.63°WKincaid — 31.22°N, 96.91°WKincaid — 28.53°N, 100.23°WKincaid — 31.29°N, 96.72°WCorsicana Marl — 33.53°N, 94.51°WCorsicana Marl — 33.10°N, 95.99°WCorsicana Marl — 32.85°N, 96.21°WCorsicana Marl — 32.88°N, 96.20°WCorsicana Marl — 30.37°N, 97.45°WCorsicana Marl — 30.35°N, 97.51°WCorsicana Marl — 30.33°N, 97.54°WCorsicana Marl — 30.16°N, 97.56°WCorsicana Marl — 29.83°N, 97.84°WCorsicana Marl — 29.60°N, 98.03°WCorsicana Marl — 29.63°N, 98.54°WCorsicana Marl — 29.59°N, 98.08°WCorsicana Marl — 29.55°N, 98.13°WCorsicana Marl — 29.35°N, 98.88°WCorsicana Marl — 29.18°N, 99.02°WCorsicana Marl — 31.30°N, 96.90°WSanta Susana — 34.05°N, 118.63°WSanta Susana — 34.25°N, 118.73°WSanta Susana — 34.22°N, 118.81°WSanta Susana — 34.26°N, 118.70°WAgrio — 38.73°S, 69.92°WAgrio — 38.30°S, 70.10°WAgrio — 38.15°S, 70.10°WAgrio — 37.73°S, 70.22°WAgrio — 38.05°S, 70.03°WLa Meseta — 64.23°S, 56.63°WLa Meseta — 64.24°S, 56.67°WLa Meseta — 64.25°S, 56.70°WLa Meseta — 64.26°S, 56.62°WLadd — 33.79°N, 117.71°WLadd — 33.72°N, 117.64°WLadd — 33.88°N, 117.57°WLadd — 33.75°N, 117.65°WPorters Creek — 32.37°N, 88.04°WPorters Creek — 32.12°N, 87.26°WPorters Creek — 31.99°N, 87.29°WPorters Creek — 31.93°N, 87.02°WPorters Creek — 31.98°N, 87.13°WPorters Creek — 32.20°N, 87.76°WPorters Creek — 32.12°N, 87.57°WPorters Creek — 32.03°N, 87.45°WPorters Creek — 31.97°N, 87.20°WPorters Creek — 32.23°N, 88.00°WPorters Creek — 31.02°N, 87.43°WPorters Creek — 35.23°N, 88.83°WProvidence — 31.91°N, 86.17°WProvidence — 31.97°N, 86.00°WProvidence — 31.92°N, 85.82°WProvidence — 31.89°N, 85.70°WProvidence — 31.95°N, 85.68°WProvidence — 31.94°N, 86.11°WProvidence — 31.84°N, 85.22°WProvidence — 31.73°N, 85.12°WProvidence — 31.92°N, 85.35°WRedding — 40.65°N, 122.24°WRedding — 40.68°N, 122.18°WRedding — 40.67°N, 122.14°WRedding — 40.64°N, 122.25°WAquia — 38.33°N, 77.27°WAquia — 37.79°N, 77.39°WAquia — 38.82°N, 76.75°WAquia — 38.71°N, 77.02°WAquia — 38.87°N, 76.75°WAquia — 38.99°N, 76.16°WAquia — 38.90°N, 76.56°WAquia — 38.60°N, 77.14°WAquia — 38.46°N, 77.27°WAquia — 39.37°N, 75.88°WAquia — 38.52°N, 77.10°WAquia — 38.43°N, 77.38°WAquia — 38.27°N, 77.18°WAquia — 38.50°N, 77.59°WWills Point — 30.17°N, 97.46°WWills Point — 30.08°N, 97.50°WWills Point — 29.57°N, 98.68°WWills Point — 31.17°N, 96.83°WWills Point — 30.10°N, 97.30°WWills Point — 30.00°N, 97.60°WWills Point — 31.74°N, 96.55°WWills Point — 30.59°N, 97.30°WWills Point — 29.96°N, 97.45°WWills Point — 29.89°N, 97.67°WWills Point — 29.77°N, 97.68°WWills Point — 29.39°N, 98.24°WMartinez — 38.05°N, 122.15°WMartinez — 38.02°N, 122.11°WMartinez — 38.90°N, 122.60°WMarshalltown — 39.78°N, 75.44°WMarshalltown — 39.55°N, 75.70°WMarshalltown — 39.55°N, 75.65°WOwl Creek — 34.17°N, 88.89°WOwl Creek — 34.82°N, 88.88°WOwl Creek — 34.74°N, 88.90°WOwl Creek — 34.88°N, 88.87°WOwl Creek — 34.50°N, 89.00°WOwl Creek — 34.45°N, 89.00°WOwl Creek — 34.44°N, 88.95°WOwl Creek — 37.00°N, 89.85°WOwl Creek — 37.00°N, 89.87°WMerchantville — 39.54°N, 75.72°WMerchantville — 40.44°N, 74.24°WMerchantville — 39.95°N, 74.99°WMerchantville — 40.14°N, 74.72°WMoreno — 37.27°N, 121.17°WMoreno — 37.25°N, 121.15°WMoreno — 37.24°N, 121.15°WMoreno — 37.13°N, 121.04°WOkarahia Sandstone — 42.57°S, 173.52°EOkarahia Sandstone — 42.60°S, 173.42°EOkarahia Sandstone — 42.55°S, 173.50°EClayton — 31.83°N, 86.62°WClayton — 31.90°N, 87.07°WClayton — 31.99°N, 87.29°WClayton — 31.89°N, 84.80°WClayton — 31.14°N, 87.94°WClayton — 32.21°N, 87.48°WClayton — 31.98°N, 87.22°WClayton — 31.99°N, 87.13°WClayton — 32.05°N, 86.78°WClayton — 35.23°N, 88.83°WClayton — 35.06°N, 88.89°WLopez de Bertodano — 64.25°S, 56.75°WLopez de Bertodano — 64.17°S, 57.75°WSobral — 64.25°S, 56.75°WSobral — 64.25°S, 56.70°WSubmeseta — 64.24°S, 56.64°WSubmeseta — 64.24°S, 56.66°WSubmeseta — 64.26°S, 56.66°WSubmeseta — 64.26°S, 56.62°WPiedra Pintada — 40.12°S, 70.27°WPiedra Pintada — 39.87°S, 70.48°WPiedra Pintada — 39.97°S, 70.47°WPiedra Pintada — 40.05°S, 70.35°WLefipán — 42.67°S, 69.98°WLefipán — 42.83°S, 69.70°WLefipán — 42.68°S, 69.84°W

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The named rock units Cucullaea has been recovered from, largest first. Drawn where the rock is now, not where it formed. 246 further formations hold fewer occurrences each and are not listed. 228 occurrences have no formation on record, which is common for older literature.

Cucullaea and its relatives

Late Cretaceous

Where Cucullaea and its relatives were recorded in the Late Cretaceous.

Found in the same rock

1,464 taxa

The Paleobiology Database records 1,122 sites for Cucullaea, 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

311 references

Each of the 1,454 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. 299 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 content3

Picture of Cucullaea

Credit
Shellnut
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

Laser scan

Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record
Specimen
Cucullaea sp. · ypm:ip:YPM IP 590176

3D model

Source
Sketchfab
Licence
CC0 Public Domain
Commercial use
the licence allows it

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 itCucullaeidae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Lamarck 1801)