Pachydiscidae

Pachydiscidae is a family of middle and upper Cretaceous ammonites in the superfamily Desmoceratoidea.

Pachydiscidae

Hectonichus · 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
DesmoceratoideaPBDB
Diet
carnivorePBDB, for Ammonoidea
Life habit
nektonicPBDB, for Ammonoidea
Motility
fast-movingPBDB, for Ammonoidea
Vision
well-developedPBDB, for Cephalopoda
Environment
marinePBDB, for Cephalopoda

Time the record covers

At least 28 million years on record.

The record covers at least 100.5 Mya to 72.2 Mya. No occurrence read is dated outside 106.3 Mya to 61.66 Mya.

Early Cretaceous — about 2 of 860 occurrencesEarly CretaceousLate Cretaceous — about 857 of 860 occurrencesLate CretaceousPaleocene — about 1 of 860 occurrencesPaleocene107–106 Mya — about 0.2 occurrences106–104 Mya — about 0.5 occurrences104–103 Mya — about 0.5 occurrences103–101 Mya — about 0.5 occurrences101–99 Mya — about 2 occurrences99–98 Mya — about 2 occurrences98–96 Mya — about 2 occurrences96–95 Mya — about 2 occurrences95–93 Mya — about 9 occurrences93–92 Mya — about 19 occurrences92–90 Mya — about 19 occurrences90–89 Mya — about 19 occurrences89–87 Mya — about 19 occurrences87–86 Mya — about 24 occurrences86–84 Mya — about 63 occurrences84–82 Mya — about 55 occurrences82–81 Mya — about 52 occurrences81–79 Mya — about 52 occurrences79–78 Mya — about 52 occurrences78–76 Mya — about 52 occurrences76–75 Mya — about 52 occurrences75–73 Mya — about 52 occurrences73–72 Mya — about 58 occurrences72–70 Mya — about 68 occurrences70–69 Mya — about 68 occurrences69–67 Mya — about 68 occurrences67–65 Mya — about 42 occurrences65–64 Mya — about 0.3 occurrences64–62 Mya — about 0.3 occurrences62–61 Mya — about 0.1 occurrences100.5 Mya72.2 Mya107.2 Mya60.8 Mya

860 occurrences of Pachydiscidae 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

860 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

137 formations

Lopez de Bertodano — 64.25°S, 56.75°WLopez de Bertodano — 64.26°S, 56.72°WMatanuska — 62.08°N, 147.83°WMatanuska — 62.03°N, 147.65°WMatanuska — 61.99°N, 147.78°WMatanuska — 61.92°N, 147.62°WMatanuska — 61.84°N, 148.06°WMatanuska — 61.91°N, 147.46°WMatanuska — 62.50°N, 150.01°WMatanuska — 62.01°N, 147.58°WMatanuska — 61.95°N, 147.53°WMatanuska — 62.01°N, 146.80°WMatanuska — 62.16°N, 147.76°WMatanuska — 61.99°N, 146.96°WKrasnoyarka — 48.68°N, 142.66°EKrasnoyarka — 47.33°N, 142.50°EKrasnoyarka — 47.39°N, 142.49°EKrasnoyarka — 48.67°N, 142.64°EAhlen — 51.75°N, 8.03°EAhlen — 51.72°N, 8.03°EAhlen — 51.82°N, 8.15°EAhlen — 51.70°N, 7.92°EAhlen — 51.72°N, 7.85°EAhlen — 51.95°N, 7.98°ESanta Marta — 63.75°S, 58.00°WSanta Marta — 64.23°S, 56.62°WSanta Marta — 64.17°S, 57.75°WMiria — 22.77°S, 114.18°EMiria — 22.68°S, 114.24°EMiria — 22.96°S, 114.08°EMiria — 22.92°S, 114.10°EMiria — 22.83°S, 114.14°EMiria — 22.72°S, 114.25°EBykov — 48.70°N, 142.68°EBykov — 48.73°N, 142.60°EGramame — 7.25°S, 34.80°WChico — 39.66°N, 121.58°WChico — 39.80°N, 121.73°WChico — 39.71°N, 121.94°WChico — 39.85°N, 121.71°WKaguyak — 58.58°N, 153.89°WKaguyak — 58.96°N, 153.95°WKaguyak — 58.92°N, 154.03°WKaguyak — 58.61°N, 153.84°WKaguyak — 58.86°N, 154.06°WKaguyak — 58.79°N, 154.07°WKaguyak — 58.88°N, 153.77°WKaguyak — 58.94°N, 153.88°WMoreno — 36.22°N, 120.12°WMoreno — 37.85°N, 121.71°WMoreno — 36.37°N, 120.29°WMoreno — 37.48°N, 121.23°WMoreno — 37.41°N, 121.20°WMoreno — 37.24°N, 121.14°WMoreno — 36.95°N, 120.89°WMoreno — 36.99°N, 120.93°WMoreno — 36.03°N, 120.14°WForbes — 38.95°N, 122.01°WForbes — 38.99°N, 122.23°WForbes — 38.60°N, 122.04°WForbes — 38.88°N, 122.17°WChinomigawa — 42.18°N, 142.73°EChinomigawa — 42.18°N, 142.78°EChinomigawa — 42.91°N, 142.42°EChinomigawa — 42.65°N, 142.42°EChignik — 56.32°N, 158.59°WChignik — 56.35°N, 158.53°WChignik — 56.40°N, 158.47°WChignik — 55.73°N, 160.73°WLewes Nodular Chalk — 51.87°N, 0.52°WLewes Nodular Chalk — 51.42°N, 1.93°WLewes Nodular Chalk — 51.69°N, 0.94°WLewes Nodular Chalk — 51.88°N, 0.03°ELewes Nodular Chalk — 51.90°N, 0.26°WLewes Nodular Chalk — 51.58°N, 0.79°WPanoche — 37.35°N, 121.21°WPanoche — 37.45°N, 121.28°WPanoche — 37.20°N, 121.11°WPanoche — 36.29°N, 120.38°WPanoche — 36.72°N, 120.78°WPanoche — 36.82°N, 120.80°WPanoche — 35.87°N, 120.28°WQuiriquina — 36.59°S, 72.98°WQuiriquina — 36.61°S, 73.06°WQuiriquina — 36.70°S, 72.97°WQuiriquina — 36.73°S, 73.14°WQuiriquina — 36.77°S, 73.09°WCraie de Valognes — 49.43°N, 1.35°WCraie de Valognes — 49.27°N, 0.33°WCraie de Valognes — 49.52°N, 1.47°WPierre Shale — 43.27°N, 104.25°WPierre Shale — 43.62°N, 103.23°WPierre Shale — 44.98°N, 104.02°WDanish White Chalk — 57.07°N, 9.98°EDanish White Chalk — 57.02°N, 8.75°EDanish White Chalk — 57.07°N, 9.92°EDanish White Chalk — 55.85°N, 12.28°EDanish White Chalk — 57.05°N, 8.70°EDanish White Chalk — 57.00°N, 9.30°EDanish White Chalk — 55.30°N, 12.45°ERosario — 30.58°N, 114.68°WRosario — 29.58°N, 115.24°WRosario — 32.41°N, 117.09°WMarshalltown — 39.78°N, 75.44°WMarshalltown — 39.54°N, 75.72°WMarshalltown — 39.55°N, 75.65°WPrairie Bluff — 34.22°N, 89.00°WPrairie Bluff — 33.07°N, 88.61°WPrairie Bluff — 33.05°N, 88.56°WPrairie Bluff — 32.39°N, 87.92°WNacatoch Sand — 32.59°N, 96.31°WNacatoch Sand — 32.10°N, 96.47°W

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The named rock units Pachydiscidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 113 further formations hold fewer occurrences each and are not listed. 227 occurrences have no formation on record, which is common for older literature.

Pachydiscidae and its relatives

Late Cretaceous

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

Found in the same rock

1,448 taxa

The Paleobiology Database records 670 sites for Pachydiscidae, 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

172 references

Each of the 860 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. 160 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 Pachydiscidae

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

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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 itDesmoceratoidea through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Spath 1922