Ptychodus polygyrus

No picture of Ptychodus polygyrus was found. Wikidata and iDigBio were searched and had none. Wikipedia has a picture filed under this name, but nothing tied it to Ptychodus polygyrus itself, so it was not used. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Ptychodus polygyrus, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
PtychodusPBDB
Diet
carnivorePBDB, for Lamniformes
Life habit
nektonicPBDB, for Lamniformes
Motility
actively mobilePBDB, for Lamniformes

Time the record covers

At least 10 million years on record.

The record covers at least 93.9 Mya to 83.6 Mya. No occurrence read is dated outside 100.5 Mya to 72.2 Mya.

Early Cretaceous — about 0 of 17 occurrencesLate Cretaceous — about 17 of 17 occurrencesLate Cretaceous101–100 Mya — about 0.4 occurrences100–99 Mya — about 1 occurrence99–98 Mya — about 1 occurrence98–97 Mya — about 1 occurrence97–96 Mya — about 1 occurrence96–95 Mya — about 1 occurrence95–94 Mya — about 1 occurrence94–93 Mya — about 1 occurrence93–92 Mya — about 1 occurrence92–91 Mya — about 1 occurrence91–90 Mya — about 1 occurrence90–89 Mya — about 0.8 occurrences89–88 Mya — about 0.4 occurrences88–87 Mya — about 0.4 occurrences87–86 Mya — about 0.4 occurrences86–85 Mya — about 0.4 occurrences85–84 Mya — about 0.6 occurrences84–83 Mya — about 0.5 occurrences83–82 Mya — about 0.2 occurrences82–81 Mya — about 0.2 occurrences81–80 Mya — about 0.2 occurrences80–79 Mya — about 0.2 occurrences79–79 Mya — about 0.2 occurrences79–78 Mya — about 0.2 occurrences78–77 Mya — about 0.2 occurrences77–76 Mya — about 0.2 occurrences76–75 Mya — about 0.2 occurrences75–74 Mya — about 0.2 occurrences74–73 Mya — about 0.2 occurrences73–72 Mya — about 0.1 occurrences93.9 Mya83.6 Mya101.1 Mya71.6 Mya

17 occurrences of Ptychodus polygyrus 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

17 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

11 formations

Carlile Shale — 43.25°N, 103.92°WCarlile Shale — 44.09°N, 104.68°WMooreville Chalk — 32.84°N, 87.89°WTres Hermanos — 34.31°N, 106.74°WBurgsteinfurt — 52.19°S, 7.17°ETropic Shale — 37.07°N, 111.54°WDmitrov — 54.07°N, 41.70°EYakhroma — 56.24°N, 38.16°EGlauconie de Lonzée — 50.55°N, 4.73°EEutaw — 32.77°N, 87.87°WCarlile — 44.14°N, 104.71°WNiobrara — 38.80°N, 100.19°W

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The named rock units Ptychodus polygyrus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 5 occurrences have no formation on record, which is common for older literature.

Ptychodus polygyrus and its relatives

Late Cretaceous

Where Ptychodus polygyrus and its relatives were recorded in the Late Cretaceous.

Found in the same rock

97 taxa

The Paleobiology Database records 16 sites for Ptychodus polygyrus, 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

13 references

Each of the 17 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. 1 further reference is 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 content0

No picture of Ptychodus polygyrus was found. Wikidata and iDigBio were searched and had none.

Wikipedia has a picture filed under this name, but nothing tied it to Ptychodus polygyrus itself, so it was not used.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Ptychodus polygyrus, or no answer at all. This entry cannot say which.

No 3D scan of Ptychodus polygyrus 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.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itPtychodus through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Agassiz 1835