Ancyloceratina

The Ancyloceratina were a diverse suborder of ammonite most closely related to the ammonites of order Lytoceratina. They evolved during the Late Jurassic but were not very common until the Cretaceous period, when they rapidly diversified and became one of the most distinctive components of Cretaceous marine faunas. They have been recorded from every continent and many are used as zonal or index fossils. The most distinctive feature of the majority of the Ancyloceratina is the tendency for most of them to have shells that are not regular spirals like most other ammonites. These irregularly-coiled ammonites are called heteromorph ammonites, in contrast to regularly coiled ammonites, which are called homomorph ammonites.

Ancyloceratina

Neale Monks at English Wikipedia · 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
AmmonitidaPBDB
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 102 million years on record.

The record covers at least 168.2 Mya to 66 Mya. No occurrence read is dated outside 170.9 Mya to 56 Mya.

Middle Jurassic — about 6 of 7938 occurrencesMiddle JurassicLate Jurassic — about 39 of 7938 occurrencesLate JurassicEarly Cretaceous — about 3037 of 7938 occurrencesEarly CretaceousLate Cretaceous — about 4851 of 7938 occurrencesLate CretaceousPaleocene — about 5 of 7938 occurrencesPaleoceneEocene — about 0 of 7938 occurrences173–169 Mya — about 0.6 occurrences169–165 Mya — about 0.5 occurrences165–161 Mya — about 5 occurrences149–145 Mya — about 16 occurrences145–141 Mya — about 33 occurrences141–137 Mya — about 19 occurrences137–133 Mya — about 80 occurrences133–129 Mya — about 88 occurrences129–125 Mya — about 134 occurrences125–121 Mya — about 576 occurrences121–117 Mya — about 572 occurrences117–113 Mya — about 398 occurrences113–109 Mya — about 400 occurrences109–105 Mya — about 201 occurrences105–102 Mya — about 446 occurrences102–98 Mya — about 476 occurrences98–94 Mya — about 489 occurrences94–90 Mya — about 497 occurrences90–86 Mya — about 275 occurrences86–82 Mya — about 629 occurrences82–78 Mya — about 536 occurrences78–74 Mya — about 536 occurrences74–70 Mya — about 743 occurrences70–66 Mya — about 783 occurrences66–62 Mya — about 4 occurrences62–58 Mya — about 0.8 occurrences58–54 Mya — about 0.3 occurrences168.2 Mya66 Mya173 Mya54 Mya

7,938 occurrences of Ancyloceratina on record, most of them in the Late Cretaceous. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

7,938 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

484 formations

Pierre Shale — 43.27°N, 104.27°WPierre Shale — 43.30°N, 104.14°WPierre Shale — 43.27°N, 104.22°WPierre Shale — 44.00°N, 103.25°WPierre Shale — 38.90°N, 101.75°WPierre Shale — 38.87°N, 101.97°WPierre Shale — 39.90°N, 101.80°WPierre Shale — 39.87°N, 102.18°WPierre Shale — 44.80°N, 105.05°WPierre Shale — 38.83°N, 103.01°WPierre Shale — 38.18°N, 104.48°WPierre Shale — 45.77°N, 105.08°WPierre Shale — 42.72°N, 103.13°WPierre Shale — 45.47°N, 104.55°WPierre Shale — 43.05°N, 104.48°WPierre Shale — 40.67°N, 106.33°WPierre Shale — 40.67°N, 105.47°WPierre Shale — 39.41°N, 104.88°WPierre Shale — 38.83°N, 104.52°WPierre Shale — 38.38°N, 104.45°WPierre Shale — 40.08°N, 105.35°WPierre Shale — 45.19°N, 101.22°WPierre Shale — 45.14°N, 100.88°WPierre Shale — 45.75°N, 101.13°WPierre Shale — 43.92°N, 102.70°WPierre Shale — 43.92°N, 102.98°WPierre Shale — 45.53°N, 100.43°WPierre Shale — 45.85°N, 98.71°WPierre Shale — 44.19°N, 99.70°WPierre Shale — 40.06°N, 106.39°WPierre Shale — 40.27°N, 105.04°WPierre Shale — 40.46°N, 104.94°WPierre Shale — 39.71°N, 105.19°WPierre Shale — 40.08°N, 105.19°WPierre Shale — 44.83°N, 105.08°WPierre Shale — 42.98°N, 102.92°WPierre Shale — 41.41°N, 105.18°WPierre Shale — 40.72°N, 106.12°WPierre Shale — 40.90°N, 105.06°WPierre Shale — 40.73°N, 105.04°WPierre Shale — 40.71°N, 105.07°WPierre Shale — 40.51°N, 105.08°WPierre Shale — 46.91°N, 104.72°WPierre Shale — 46.95°N, 104.77°WPierre Shale — 40.28°N, 105.14°WPierre Shale — 40.76°N, 105.05°WPierre Shale — 38.45°N, 105.15°WPierre Shale — 40.24°N, 106.40°WPierre Shale — 40.20°N, 105.96°WPierre Shale — 45.21°N, 101.51°WPierre Shale — 44.01°N, 102.24°WPierre Shale — 43.25°N, 104.27°WPierre Shale — 40.08°N, 105.27°WPierre Shale — 43.55°N, 104.18°WPierre Shale — 45.52°N, 100.47°WPierre Shale — 44.05°N, 101.20°WPierre Shale — 43.23°N, 103.21°WPierre Shale — 44.78°N, 103.90°WPierre Shale — 43.85°N, 102.34°WPierre Shale — 43.91°N, 102.91°WGrès verts helvétiques — 45.99°N, 6.71°EGrès verts helvétiques — 45.91°N, 6.49°EGrès verts helvétiques — 46.10°N, 6.82°EGrès verts helvétiques — 45.90°N, 6.34°EGrès verts helvétiques — 46.04°N, 6.62°EGrès verts helvétiques — 46.01°N, 6.35°EGrès verts helvétiques — 46.02°N, 6.75°EGrès verts helvétiques — 45.96°N, 6.54°EGrès verts helvétiques — 45.86°N, 6.45°EGrès verts helvétiques — 45.85°N, 6.43°EGrès verts helvétiques — 46.05°N, 6.52°EGrès verts helvétiques — 46.95°N, 6.31°EGrès verts helvétiques — 46.87°N, 6.31°EGrès verts helvétiques — 45.81°N, 6.28°EPrairie Bluff — 34.63°N, 88.84°WPrairie Bluff — 34.51°N, 88.92°WPrairie Bluff — 34.25°N, 88.97°WPrairie Bluff — 34.24°N, 89.00°WPrairie Bluff — 33.93°N, 88.98°WPrairie Bluff — 33.79°N, 88.97°WPrairie Bluff — 33.79°N, 88.91°WPrairie Bluff — 33.72°N, 88.92°WPrairie Bluff — 33.50°N, 88.81°WPrairie Bluff — 33.38°N, 88.74°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 — 32.08°N, 87.03°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°WPrairie Bluff — 32.34°N, 86.77°WFox Hills — 45.14°N, 100.88°WFox Hills — 40.70°N, 105.00°WFox Hills — 40.45°N, 103.91°WFox Hills — 40.89°N, 105.00°WFox Hills — 40.64°N, 104.94°WFox Hills — 39.74°N, 105.22°WFox Hills — 39.29°N, 105.86°WFox Hills — 40.44°N, 104.86°WFox Hills — 45.62°N, 100.81°WFox Hills — 45.72°N, 100.82°WFox Hills — 45.77°N, 101.10°WFox Hills — 46.25°N, 100.22°WFox Hills — 45.65°N, 100.89°WFox Hills — 45.69°N, 101.02°WFox Hills — 45.14°N, 101.17°WFox Hills — 45.61°N, 100.90°WFox Hills — 45.26°N, 101.03°WFox Hills — 43.18°N, 104.35°WFox Hills — 45.70°N, 100.67°WFox Hills — 45.16°N, 101.29°WFox Hills — 45.03°N, 101.46°WFox Hills — 44.92°N, 101.28°WFox Hills — 45.24°N, 101.22°WFox Hills — 45.22°N, 101.50°WFox Hills — 45.29°N, 101.32°WFox Hills — 44.97°N, 101.20°WFox Hills — 43.19°N, 104.36°WFox Hills — 43.28°N, 104.26°WFox Hills — 45.23°N, 101.10°WFox Hills — 45.10°N, 101.10°WFox Hills — 45.72°N, 101.20°WFox Hills — 45.22°N, 101.36°WFox Hills — 45.21°N, 101.66°WFox Hills — 45.23°N, 101.61°WFox Hills — 45.17°N, 101.78°WFox Hills — 45.59°N, 100.96°WFox Hills — 45.73°N, 101.10°WFox Hills — 44.95°N, 101.26°WFox Hills — 44.98°N, 101.67°WMancos Shale — 36.35°N, 109.82°WMancos Shale — 35.73°N, 110.82°WMancos Shale — 38.90°N, 107.93°WMancos Shale — 36.14°N, 109.82°WMancos Shale — 36.18°N, 110.88°WMancos Shale — 36.04°N, 111.04°WMancos Shale — 36.18°N, 109.88°WMancos Shale — 35.97°N, 110.84°WMancos Shale — 35.96°N, 110.89°WMancos Shale — 36.53°N, 110.09°WMancos Shale — 39.37°N, 108.94°WMancos Shale — 40.76°N, 108.89°WMancos Shale — 34.74°N, 108.84°WMancos Shale — 34.77°N, 108.78°WMancos Shale — 38.77°N, 111.39°WMancos Shale — 34.44°N, 107.47°WMancos Shale — 34.42°N, 107.41°WMancos Shale — 35.87°N, 106.91°WMancos Shale — 34.83°N, 108.97°WMancos Shale — 32.55°N, 106.57°WMancos Shale — 36.55°N, 110.48°WMancos Shale — 35.08°N, 107.38°WMancos Shale — 34.70°N, 107.88°WMancos Shale — 32.50°N, 107.70°WMancos Shale — 35.72°N, 106.73°WMancos Shale — 35.21°N, 107.13°WMancos Shale — 35.45°N, 106.20°WMancos Shale — 35.47°N, 106.20°WLa Peña — 29.61°N, 104.93°WLa Peña — 25.43°N, 100.12°WLa Peña — 25.62°N, 100.46°WSaku — 44.07°N, 141.93°ESaku — 44.74°N, 142.01°ESaku — 44.11°N, 142.00°ESaku — 44.02°N, 141.91°ESaku — 44.03°N, 141.95°ESaku — 43.05°N, 142.12°ESaku — 43.08°N, 142.00°ESaku — 43.05°N, 142.16°ESaku — 43.67°N, 142.08°ESaku — 44.06°N, 142.98°ESaku — 43.05°N, 142.15°EBudden Canyon — 40.45°N, 122.56°WBudden Canyon — 40.42°N, 122.53°WBudden Canyon — 40.41°N, 122.68°WBudden Canyon — 40.43°N, 122.56°WBudden Canyon — 40.49°N, 122.49°WBudden Canyon — 40.60°N, 122.90°WFolkestone — 51.08°N, 1.18°EFolkestone — 51.08°N, 1.08°EFolkestone — 51.08°N, 1.08°WFolkestone — 51.28°N, 0.53°EFolkestone — 51.27°N, 0.08°EFolkestone — 51.32°N, 0.32°EFolkestone — 51.22°N, 0.82°WFolkestone — 50.88°N, 0.33°WNacatoch Sand — 32.10°N, 96.47°WNacatoch Sand — 32.59°N, 96.31°WNacatoch Sand — 33.14°N, 96.11°WNacatoch Sand — 33.61°N, 95.05°WNacatoch Sand — 31.31°N, 96.90°WSarcheshmah — 37.72°N, 56.32°ESarcheshmah — 37.72°N, 56.12°ESarcheshmah — 37.78°N, 56.33°ENiobrara — 38.25°N, 104.60°WNiobrara — 36.35°N, 104.60°WNiobrara — 36.59°N, 104.53°WNiobrara — 36.68°N, 104.41°WNiobrara — 36.35°N, 104.79°WNiobrara — 36.28°N, 104.72°WNiobrara — 36.74°N, 104.17°WNiobrara — 38.72°N, 100.70°WNiobrara — 43.04°N, 97.26°WNiobrara — 38.69°N, 100.92°WNiobrara — 39.61°N, 105.02°WNiobrara — 39.76°N, 105.22°WLes Graous — 43.85°N, 7.11°ELes Graous — 43.85°N, 7.10°EFerruginous Sands — 50.60°N, 1.32°WFerruginous Sands — 50.63°N, 1.17°WFerruginous Sands — 50.60°N, 1.35°WFerruginous Sands — 50.65°N, 1.15°WSaratoga Chalk — 33.77°N, 93.68°WSaratoga Chalk — 33.75°N, 93.90°WSaratoga Chalk — 33.72°N, 93.67°WSaratoga Chalk — 33.87°N, 93.58°WSaratoga Chalk — 33.70°N, 93.96°WCorsicana Marl — 33.51°N, 94.67°WCorsicana Marl — 33.10°N, 95.99°WCorsicana Marl — 32.86°N, 96.21°WCorsicana Marl — 32.85°N, 96.21°WCorsicana Marl — 32.53°N, 96.27°WCorsicana Marl — 32.22°N, 96.31°WCorsicana Marl — 32.06°N, 96.47°WCorsicana Marl — 32.05°N, 96.44°WCorsicana Marl — 31.81°N, 96.54°WCorsicana Marl — 31.76°N, 96.57°WCorsicana Marl — 31.74°N, 96.61°WCorsicana Marl — 31.40°N, 96.74°WCorsicana Marl — 31.12°N, 96.82°WCorsicana Marl — 30.94°N, 96.95°WCorsicana Marl — 30.37°N, 97.46°WCorsicana Marl — 30.37°N, 97.45°WCorsicana Marl — 30.30°N, 97.46°WCorsicana Marl — 29.83°N, 97.84°WCorsicana Marl — 29.72°N, 97.90°WCorsicana Marl — 29.60°N, 98.03°WCorsicana Marl — 29.18°N, 99.02°WCorsicana Marl — 31.30°N, 96.90°WSanta Marta — 63.75°S, 58.00°WSanta Marta — 64.23°S, 56.62°WSanta Marta — 64.17°S, 57.75°WTaboulouart — 31.21°N, 7.88°WTaboulouart — 31.26°N, 9.80°WTaboulouart — 30.87°N, 9.81°WTaboulouart — 30.72°N, 9.80°WTaboulouart — 30.61°N, 9.73°WRio Mayer — 49.00°S, 72.00°WRio Mayer — 48.92°S, 72.08°WRio Mayer — 48.92°S, 71.92°WRio Mayer — 48.92°S, 71.50°WRio Mayer — 48.28°S, 72.00°WRio Mayer — 48.80°S, 72.15°WRio Mayer — 47.95°S, 72.12°WRio Mayer — 48.90°S, 72.25°WRio Mayer — 48.38°S, 71.80°WRio Mayer — 48.78°S, 72.38°WRio Mayer — 49.40°S, 71.82°WRio Mayer — 49.38°S, 71.72°WRio Mayer — 49.03°S, 72.13°WMiria — 22.70°S, 114.24°EMiria — 22.80°S, 114.17°EMiria — 22.89°S, 114.12°EMiria — 22.68°S, 114.26°EMiria — 22.99°S, 114.08°EMiria — 22.89°S, 114.24°EMiria — 22.80°S, 114.14°ELewes Nodular Chalk — 50.75°N, 2.97°WLewes Nodular Chalk — 51.56°N, 1.62°WLewes Nodular Chalk — 51.90°N, 0.26°WLewes Nodular Chalk — 51.87°N, 0.52°WLewes Nodular Chalk — 52.01°N, 0.01°WLewes Nodular Chalk — 51.88°N, 0.42°WLewes Nodular Chalk — 51.08°N, 1.38°WLewes Nodular Chalk — 51.64°N, 0.75°WChico — 39.66°N, 121.58°WChico — 39.83°N, 121.71°WChico — 39.87°N, 121.71°WChico — 39.71°N, 121.94°WChico — 39.62°N, 121.53°WChico — 39.65°N, 121.60°WChico — 39.76°N, 121.62°WChico — 38.72°N, 121.21°WBearpaw Shale — 49.77°N, 107.44°WBearpaw Shale — 50.90°N, 110.00°WBearpaw Shale — 49.40°N, 110.69°WBearpaw Shale — 49.99°N, 104.52°WBearpaw Shale — 49.67°N, 109.50°WBearpaw Shale — 51.10°N, 106.65°WBearpaw Shale — 49.74°N, 107.49°WBearpaw Shale — 49.47°N, 109.47°WBearpaw Shale — 49.98°N, 105.30°WBearpaw Shale — 49.38°N, 109.28°WBearpaw Shale — 49.43°N, 109.85°WBearpaw Shale — 49.67°N, 109.32°WBearpaw Shale — 49.80°N, 109.60°WBearpaw Shale — 49.00°N, 105.77°WBearpaw Shale — 50.23°N, 105.40°WBearpaw Shale — 49.55°N, 107.92°WMatanuska — 61.87°N, 147.35°WMatanuska — 62.08°N, 147.83°WMatanuska — 62.03°N, 147.58°WMatanuska — 61.99°N, 147.78°WMatanuska — 61.84°N, 148.06°WMatanuska — 61.91°N, 147.46°WMatanuska — 61.82°N, 147.45°WMatanuska — 61.92°N, 147.62°WMatanuska — 61.80°N, 147.58°WMatanuska — 61.80°N, 147.70°WMatanuska — 61.92°N, 146.87°WMatanuska — 61.87°N, 147.35°WMatanuska — 61.74°N, 148.71°WMatanuska — 61.74°N, 148.84°WMatanuska — 62.03°N, 147.70°WMatanuska — 61.79°N, 148.18°WMatanuska — 61.85°N, 147.82°WMatanuska — 62.01°N, 146.80°WMatanuska — 62.05°N, 146.98°WMatanuska — 61.96°N, 148.00°WMatanuska — 62.16°N, 147.77°WMatanuska — 61.69°N, 148.96°WMatanuska — 61.75°N, 148.63°WMatanuska — 61.76°N, 148.84°WMatanuska — 61.86°N, 148.12°W

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The named rock units Ancyloceratina has been recovered from, largest first. Drawn where the rock is now, not where it formed. 460 further formations hold fewer occurrences each and are not listed. 2,020 occurrences have no formation on record, which is common for older literature.

Ancyloceratina and its relatives

Late Cretaceous

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

Found in the same rock

725 taxa

The Paleobiology Database records at least 917 sites for Ancyloceratina, 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

659 references

Each of the 7,938 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. 647 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 Ancyloceratina

Credit
Neale Monks at English Wikipedia
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Ancyloceratina 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 itAmmonitida through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Wiedmann 1966