Placenticeras

Placenticeras is a genus of ammonites from the Late Cretaceous. Its fossils have been found in Asia, Europe, North and South America.

Placenticeras

Uncredited · 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
PlacenticeratidaePBDB
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 66 Mya.

Early Cretaceous — about 1 of 241 occurrencesEarly CretaceousLate Cretaceous — about 240 of 241 occurrencesLate CretaceousPaleocene — about 0 of 241 occurrences107–106 Mya — about 0.1 occurrences106–104 Mya — about 0.2 occurrences104–103 Mya — about 0.2 occurrences103–102 Mya — about 0.2 occurrences102–100 Mya — about 1 occurrence100–99 Mya — about 4 occurrences99–97 Mya — about 4 occurrences97–96 Mya — about 4 occurrences96–95 Mya — about 4 occurrences95–93 Mya — about 7 occurrences93–92 Mya — about 9 occurrences92–90 Mya — about 9 occurrences90–89 Mya — about 11 occurrences89–88 Mya — about 13 occurrences88–86 Mya — about 13 occurrences86–85 Mya — about 24 occurrences85–83 Mya — about 26 occurrences83–82 Mya — about 13 occurrences82–81 Mya — about 13 occurrences81–79 Mya — about 13 occurrences79–78 Mya — about 13 occurrences78–76 Mya — about 13 occurrences76–75 Mya — about 13 occurrences75–74 Mya — about 13 occurrences74–72 Mya — about 13 occurrences72–71 Mya — about 2 occurrences71–69 Mya — about 2 occurrences69–68 Mya — about 2 occurrences68–67 Mya — about 2 occurrences67–65 Mya — about 0.7 occurrences100.5 Mya72.2 Mya107.1 Mya65.2 Mya

241 occurrences of Placenticeras 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

241 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

54 formations

Mancos Shale — 36.35°N, 109.82°WMancos Shale — 35.73°N, 110.82°WMancos Shale — 36.08°N, 111.07°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 — 35.87°N, 106.91°WMancos Shale — 35.47°N, 106.88°WMancos Shale — 35.72°N, 106.73°WPierre Shale — 43.27°N, 104.27°WPierre Shale — 43.26°N, 104.22°WPierre Shale — 38.87°N, 101.97°WPierre Shale — 38.90°N, 101.75°WPierre Shale — 40.06°N, 106.39°WPierre Shale — 44.98°N, 104.02°WMerchantville — 39.54°N, 75.72°WMerchantville — 39.55°N, 75.65°WMerchantville — 39.46°N, 75.87°WMerchantville — 40.11°N, 74.74°WMerchantville — 40.44°N, 74.24°WMerchantville — 39.95°N, 74.99°WSt Lucia — 28.47°S, 32.17°ESt Lucia — 28.43°S, 32.18°ESt Lucia — 28.77°S, 31.75°ESt Lucia — 28.09°S, 32.33°ESt Lucia — 28.22°S, 32.30°ESt Lucia — 27.87°S, 32.34°ESt Lucia — 27.86°S, 32.35°ESt Lucia — 28.03°S, 32.28°EBearpaw — 49.88°N, 110.29°WBearpaw — 49.45°N, 112.83°WBearpaw — 49.36°N, 110.42°WBearpaw — 50.67°N, 107.73°WBearpaw — 49.53°N, 112.88°WEutaw — 33.52°N, 88.49°WEutaw — 32.46°N, 84.99°WEutaw — 32.39°N, 84.84°WEutaw — 32.35°N, 85.09°WEutaw — 32.38°N, 84.93°WEutaw — 32.72°N, 87.80°WCoffee Sand — 34.43°N, 88.55°WCoffee Sand — 34.56°N, 88.45°WCoffee Sand — 34.66°N, 88.57°WCoffee Sand — 34.67°N, 88.44°WCoffee Sand — 34.43°N, 88.42°WCoffee Sand — 34.26°N, 88.70°WCoffee Sand — 34.93°N, 88.52°WCalcaires à Lima — 42.91°N, 2.35°ENeylandville Marl — 33.37°N, 95.69°WNeylandville Marl — 33.20°N, 96.61°WNeylandville Marl — 32.59°N, 96.31°WNeylandville Marl — 33.14°N, 96.11°WNeylandville Marl — 31.52°N, 96.53°WTropic Shale — 37.07°N, 111.62°WTropic Shale — 37.29°N, 112.69°WAguja — 29.83°N, 103.25°WNiobrara — 36.35°N, 104.60°WNiobrara — 38.27°N, 104.61°WHochmoos — 47.58°N, 13.51°ECraie de Villedieu — 45.00°N, 0.37°ECraie de Villedieu — 47.74°N, 0.65°ETaylor Marl — 27.27°N, 101.32°WTaylor Marl — 27.98°N, 100.92°WTaylor Marl — 27.73°N, 101.33°WBearpaw — 48.19°N, 106.39°WBearpaw — 48.15°N, 106.14°WBlack Creek — 35.77°N, 78.64°WBlack Creek — 35.46°N, 77.68°WBlack Creek — 35.67°N, 77.47°WAnnona — 33.77°N, 93.92°WAnnona — 33.83°N, 93.81°WAnnona — 33.80°N, 94.06°WMooreville Chalk — 32.35°N, 86.34°WMooreville Chalk — 32.51°N, 86.18°WSalinas — 14.25°S, 12.36°EWoodbury — 39.91°N, 75.03°WWoodbury — 40.45°N, 74.17°WPawkowki — 49.01°N, 111.61°WPawkowki — 49.10°N, 111.08°WMount Laurel Sand — 39.79°N, 75.63°WLewis Shale — 36.98°N, 106.70°W

Loading coastlines…

The named rock units Placenticeras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 30 further formations hold fewer occurrences each and are not listed. 44 occurrences have no formation on record, which is common for older literature.

Placenticeras and its relatives

Late Cretaceous

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

Found in the same rock

1,009 taxa

The Paleobiology Database records 216 sites for Placenticeras, 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

84 references

Each of the 241 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. 72 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 content2

Picture of Placenticeras

Credit
nobody named on the record
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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 itPlacenticeratidae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Meek 1876