Ptychodus anonymus

Ptychodus anonymus

US Forest Service · CC0 · via GBIF. 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
PtychodusPBDB
Diet
carnivorePBDB, for Lamniformes
Life habit
nektonicPBDB, for Lamniformes
Motility
actively mobilePBDB, for Lamniformes

Time the record covers

At least 4.1 million years on record.

The record covers at least 93.9 Mya to 89.8 Mya. No occurrence read is dated outside 100.5 Mya to 83.6 Mya.

Early Cretaceous — about 0 of 49 occurrencesLate Cretaceous — about 49 of 49 occurrencesLate Cretaceous101–100 Mya — about 0.5 occurrences100–100 Mya — about 3 occurrences100–99 Mya — about 3 occurrences99–99 Mya — about 3 occurrences99–98 Mya — about 3 occurrences98–97 Mya — about 3 occurrences97–97 Mya — about 3 occurrences97–96 Mya — about 3 occurrences96–96 Mya — about 3 occurrences96–95 Mya — about 3 occurrences95–94 Mya — about 3 occurrences94–94 Mya — about 3 occurrences94–93 Mya — about 2 occurrences93–93 Mya — about 2 occurrences93–92 Mya — about 2 occurrences92–91 Mya — about 2 occurrences91–91 Mya — about 2 occurrences91–90 Mya — about 2 occurrences90–90 Mya — about 2 occurrences90–89 Mya — about 0.2 occurrences89–88 Mya — about 0.2 occurrences88–88 Mya — about 0.2 occurrences88–87 Mya — about 0.2 occurrences87–87 Mya — about 0.2 occurrences87–86 Mya — about 0.2 occurrences86–85 Mya — about 0.1 occurrences85–85 Mya — about 0.0 occurrences85–84 Mya — about 0.0 occurrences84–84 Mya — about 0.0 occurrences84–83 Mya — about 0.0 occurrences93.9 Mya89.8 Mya101 Mya83.1 Mya

49 occurrences of Ptychodus anonymus 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

49 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

10 formations

Greenhorn — 43.29°N, 103.80°WGreenhorn — 44.72°N, 103.67°WGreenhorn — 44.76°N, 103.75°WGreenhorn — 43.29°N, 103.42°WGreenhorn — 33.89°N, 106.75°WGreenhorn Limestone — 37.22°N, 103.60°WGreenhorn Limestone — 39.00°N, 98.92°WGreenhorn Limestone — 37.69°N, 103.94°WGreenhorn Limestone — 40.01°N, 97.17°WGreenhorn Limestone — 38.87°N, 98.51°WGreenhorn Limestone — 38.94°N, 98.80°WGreenhorn Limestone — 38.78°N, 98.96°WGreenhorn Limestone — 38.74°N, 99.04°WGreenhorn Limestone — 34.98°N, 103.41°WGreenhorn Limestone — 38.92°N, 98.90°WCarlile Shale — 42.74°N, 97.03°WCarlile Shale — 39.04°N, 99.07°WCarlile Shale — 43.25°N, 103.92°WCarlile Shale — 44.09°N, 104.68°WCarlile — 44.75°N, 103.85°WCarlile — 43.96°N, 104.44°WCarlile — 44.14°N, 104.71°WKaskapau — 55.71°N, 117.60°WYakhroma — 56.24°N, 38.16°EBelle Fourche — 53.21°N, 103.52°WTres Hermanos — 34.31°N, 106.74°WDmitrov — 54.07°N, 41.70°ENiobrara — 38.80°N, 100.19°W

Loading coastlines…

The named rock units Ptychodus anonymus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Ptychodus anonymus and its relatives

Late Cretaceous

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

Found in the same rock

150 taxa

The Paleobiology Database records 48 sites for Ptychodus anonymus, 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

20 references

Each of the 49 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. 8 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 Ptychodus anonymus

Source
GBIF
Credit
US Forest Service
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Ptychodus anonymus was found in MorphoSource and Sketchfab.

Smithsonian Open Access was 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. Williston 1900