Coilopoceratidae

Coilopoceratidae is a family of generally large, proper ammonites with strongly involute shells from the Cretaceous, Albian to Turonian. Coilopoceratids have variably compressed shells with flattish to broadly rounded sides and narrowly rounded to sharp keel-like venters. Whorl sections are generally lanceolate. The suture is ammonitic with an overall clumpy appearance.

Coilopoceratidae

Daderot · CC0 · 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
AcanthoceratoideaPBDB
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 6.6 million years on record.

The record covers at least 100.5 Mya to 93.9 Mya. No occurrence read is dated outside 113.2 Mya to 85.7 Mya.

Early Cretaceous — about 1 of 186 occurrencesEarly CretaceousLate Cretaceous — about 185 of 186 occurrencesLate Cretaceous114–113 Mya — about 0.0 occurrences113–112 Mya — about 0.1 occurrences112–111 Mya — about 0.1 occurrences111–110 Mya — about 0.1 occurrences110–109 Mya — about 0.1 occurrences109–108 Mya — about 0.1 occurrences108–107 Mya — about 0.1 occurrences107–106 Mya — about 0.1 occurrences106–105 Mya — about 0.1 occurrences105–104 Mya — about 0.1 occurrences104–103 Mya — about 0.1 occurrences103–102 Mya — about 0.1 occurrences102–101 Mya — about 0.1 occurrences101–100 Mya — about 0.1 occurrences100–99 Mya — about 0.7 occurrences99–98 Mya — about 0.7 occurrences98–98 Mya — about 0.7 occurrences98–97 Mya — about 0.7 occurrences97–96 Mya — about 0.7 occurrences96–95 Mya — about 0.7 occurrences95–94 Mya — about 8 occurrences94–93 Mya — about 42 occurrences93–92 Mya — about 42 occurrences92–91 Mya — about 42 occurrences91–90 Mya — about 42 occurrences90–89 Mya — about 5 occurrences89–88 Mya — about 0.1 occurrences88–87 Mya — about 0.1 occurrences87–86 Mya — about 0.1 occurrences86–85 Mya — about 0.0 occurrences100.5 Mya93.9 Mya113.8 Mya85.2 Mya

186 occurrences of Coilopoceratidae 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

186 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

28 formations

Mancos Shale — 35.72°N, 106.92°WMancos Shale — 35.29°N, 107.11°WMancos Shale — 34.70°N, 107.88°WMancos Shale — 33.88°N, 106.75°WMancos Shale — 34.48°N, 107.53°WMancos Shale — 34.06°N, 106.65°WMancos Shale — 35.87°N, 106.91°WMancos Shale — 34.38°N, 107.38°WMancos Shale — 35.31°N, 106.99°WMancos Shale — 35.28°N, 106.94°WMancos Shale — 35.23°N, 106.99°WMancos Shale — 35.61°N, 107.00°WMancos Shale — 36.40°N, 106.82°WMancos Shale — 36.60°N, 106.73°WMancos Shale — 35.98°N, 106.91°WMancos Shale — 35.53°N, 106.97°WMancos Shale — 35.47°N, 106.88°WMancos Shale — 35.20°N, 107.36°WMancos Shale — 34.83°N, 107.67°WMancos Shale — 34.44°N, 107.74°WMancos Shale — 34.46°N, 107.71°WMancos Shale — 33.50°N, 104.06°WMancos Shale — 32.50°N, 107.70°WMancos Shale — 35.45°N, 106.20°WMungo River — 4.53°N, 9.51°EMungo River — 4.55°N, 9.53°ECotinguiba — 10.76°S, 37.07°WCotinguiba — 10.85°S, 37.17°WCotinguiba — 10.86°S, 37.15°WWata — 28.65°N, 33.24°EWata — 29.67°N, 34.50°EWata — 30.38°N, 33.52°EWata — 28.81°N, 33.50°EWata — 29.28°N, 34.72°EWata — 28.80°N, 34.48°EWata — 28.68°N, 32.42°EMungo River — 7.74°N, 8.50°EIndidura — 29.35°N, 101.05°WIndidura — 21.93°N, 102.17°WConor — 6.57°S, 78.73°WBoquillas — 29.50°N, 105.00°WLa Luna — 9.62°N, 70.35°WCajamarca — 6.68°S, 78.53°WCajamarca — 6.77°S, 78.62°WSan Rafael — 5.55°N, 73.06°WSan Rafael — 5.53°N, 73.52°WOjinaga — 30.75°N, 105.18°WIgumale — 6.79°N, 7.97°ECoñor — 6.87°S, 78.15°WCoñor — 7.16°S, 78.51°WTres Hermanos — 33.88°N, 106.75°WTres Hermanos — 34.44°N, 107.47°WMexcala — 17.97°N, 99.27°WZebbag — 34.15°N, 9.08°ECarlile Shale — 36.36°N, 104.52°WCarlile Shale — 36.39°N, 104.33°WMassillan — 44.24°N, 4.75°EEze-Aku — 6.00°N, 7.47°EOdukpani — 5.21°N, 8.22°EEze-Aku Shales — 6.43°N, 7.82°EYolde — 9.69°N, 11.62°ESan Fernando — 10.50°N, 61.25°W

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The named rock units Coilopoceratidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 4 further formations hold fewer occurrences each and are not listed. 23 occurrences have no formation on record, which is common for older literature.

Coilopoceratidae and its relatives

Late Cretaceous

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

Found in the same rock

316 taxa

The Paleobiology Database records 146 sites for Coilopoceratidae, and this reads all 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

43 references

Each of the 186 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. 31 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 Coilopoceratidae

Credit
Daderot
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Coilopoceratidae 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 itAcanthoceratoidea through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hyatt 1903