Polyptychoceras

Polyptychoceras is an extinct genus of ammonites from the Late Cretaceous of Asia, Europe, and North and South America. It was first named by Hisakatsu Yabe in 1927.

Polyptychoceras

Didier Descouens · CC BY-SA 4.0 · 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
PolyptychoceratinaePBDB
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 17 million years on record.

The record covers at least 89.8 Mya to 72.2 Mya. No occurrence read is dated outside 100.5 Mya to 66 Mya.

Early Cretaceous — about 0 of 76 occurrencesLate Cretaceous — about 76 of 76 occurrencesLate CretaceousPaleocene — about 0 of 76 occurrences101–100 Mya — about 0.1 occurrences100–99 Mya — about 0.2 occurrences99–98 Mya — about 0.2 occurrences98–96 Mya — about 0.2 occurrences96–95 Mya — about 0.2 occurrences95–94 Mya — about 0.2 occurrences94–93 Mya — about 0.2 occurrences93–92 Mya — about 0.2 occurrences92–90 Mya — about 0.2 occurrences90–89 Mya — about 0.3 occurrences89–88 Mya — about 0.4 occurrences88–87 Mya — about 0.4 occurrences87–86 Mya — about 2 occurrences86–84 Mya — about 24 occurrences84–83 Mya — about 18 occurrences83–82 Mya — about 3 occurrences82–81 Mya — about 3 occurrences81–80 Mya — about 3 occurrences80–78 Mya — about 3 occurrences78–77 Mya — about 3 occurrences77–76 Mya — about 3 occurrences76–75 Mya — about 3 occurrences75–74 Mya — about 3 occurrences74–72 Mya — about 3 occurrences72–71 Mya — about 1 occurrence71–70 Mya — about 0.6 occurrences70–69 Mya — about 0.6 occurrences69–68 Mya — about 0.6 occurrences68–67 Mya — about 0.6 occurrences67–65 Mya — about 0.2 occurrences89.8 Mya72.2 Mya101.2 Mya65.3 Mya

76 occurrences of Polyptychoceras 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

76 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

14 formations

Hinoshima — 32.47°N, 130.47°EHinoshima — 32.39°N, 130.40°EUpper Haborogawa — 44.40°N, 141.83°EUpper Haborogawa — 44.27°N, 141.75°EUpper Haborogawa — 44.13°N, 141.75°EMiddle Haborogawa — 44.13°N, 141.75°ESanta Marta — 64.17°S, 57.75°WSanta Marta — 63.75°S, 58.00°WMikasa — 43.17°N, 141.83°EMata Amarilla — 49.80°S, 71.82°WDanish White Chalk — 55.30°N, 12.45°EChico — 39.85°N, 121.71°WNagase — 33.75°N, 133.97°EValudavur — 12.03°N, 79.75°EParras — 26.75°N, 103.17°WKashima — 43.26°N, 142.06°EHaslam — 49.59°N, 124.99°WOsousyunai — 44.63°N, 142.05°E

Loading coastlines…

The named rock units Polyptychoceras has been recovered from, largest first. Drawn where the rock is now, not where it formed. 17 occurrences have no formation on record, which is common for older literature.

Polyptychoceras and its relatives

Late Cretaceous

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

Found in the same rock

274 taxa

The Paleobiology Database records 59 sites for Polyptychoceras, 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

24 references

Each of the 76 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. 12 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 Polyptychoceras

Credit
Didier Descouens
Licence
CC BY-SA 4.0
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 itPolyptychoceratinae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Yabe 1927