Cucullaeidae

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.

Cucullaeidae

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
ArcoideaPBDB
Diet
suspension feederPBDB, for Arcoidea
Life habit
semi-infaunalPBDB, for Arcoidea
Motility
facultatively mobilePBDB, for Arcoidea
Vision
limitedPBDB

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 1573 occurrencesCarboniferous — about 0 of 1573 occurrencesPermian — about 0 of 1573 occurrencesEarly Triassic — about 0 of 1573 occurrencesMiddle Triassic — about 6 of 1573 occurrencesLate Triassic — about 4 of 1573 occurrencesLate TriassicEarly Jurassic — about 84 of 1573 occurrencesMiddle Jurassic — about 44 of 1573 occurrencesLate Jurassic — about 83 of 1573 occurrencesEarly Cretaceous — about 170 of 1573 occurrencesEarly CretaceousLate Cretaceous — about 640 of 1573 occurrencesLate CretaceousPaleocene — about 304 of 1573 occurrencesEocene — about 82 of 1573 occurrencesOligocene — about 35 of 1573 occurrencesMiocene — about 77 of 1573 occurrencesPliocene — about 22 of 1573 occurrencesPleistocene — about 20 of 1573 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 42 occurrences161–149 Mya — about 71 occurrences149–137 Mya — about 35 occurrences137–124 Mya — about 54 occurrences124–112 Mya — about 59 occurrences112–99 Mya — about 42 occurrences99–87 Mya — about 132 occurrences87–75 Mya — about 130 occurrences75–62 Mya — about 514 occurrences62–50 Mya — about 165 occurrences50–37 Mya — about 50 occurrences37–25 Mya — about 52 occurrences25–12 Mya — about 68 occurrences12–0 Mya — about 61 occurrences358.86 Mya129 ka373 Mya0 Mya

1,573 occurrences of Cucullaeidae 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

1,573 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

304 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°WKap Leslie — 70.48°N, 21.97°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°WMungo River — 4.48°N, 9.49°EMungo River — 4.44°N, 9.49°EOkarahia 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°W

Loading coastlines…

The named rock units Cucullaeidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 280 further formations hold fewer occurrences each and are not listed. 260 occurrences have no formation on record, which is common for older literature.

Cucullaeidae and its relatives

Late Cretaceous

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

Found in the same rock

1,527 taxa

The Paleobiology Database records 1,223 sites for Cucullaeidae, and this reads 240 of them. 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

357 references

Each of the 1,573 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. 345 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 Cucullaeidae

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

No 3D scan of Cucullaeidae 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 itArcoidea through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Stewart 1930)