Oxytoma (Hypoxytoma)

Hypoxytoma Ichikawa, 1958, a relative of Oxytoma (Hypoxytoma) — not Oxytoma (Hypoxytoma) itself

Not Oxytoma (Hypoxytoma). This is Hypoxytoma Ichikawa, 1958, a relative — both are Oxytomidae.

Yale Peabody Museum · 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
OxytomaPBDB
Diet
suspension feederPBDB, for Oxytoma
Life habit
epifaunalPBDB, for Oxytoma
Motility
stationary, attachedPBDB, for Oxytoma
Vision
blindPBDB, for Bivalvia
Environment
marinePBDB, for Pectinida

Time the record covers

At least 70 million years on record.

The record covers at least 143.1 Mya to 72.2 Mya. No occurrence read is dated outside 161.5 Mya to 66 Mya.

Middle Jurassic — about 0 of 62 occurrencesLate Jurassic — about 1 of 62 occurrencesLate JurassicEarly Cretaceous — about 2 of 62 occurrencesEarly CretaceousLate Cretaceous — about 59 of 62 occurrencesLate CretaceousPaleocene — about 0 of 62 occurrences163–160 Mya — about 0.1 occurrences160–157 Mya — about 0.2 occurrences157–153 Mya — about 0.2 occurrences153–150 Mya — about 0.2 occurrences150–147 Mya — about 0.3 occurrences147–144 Mya — about 0.3 occurrences144–140 Mya — about 0.6 occurrences140–137 Mya — about 0.7 occurrences137–134 Mya — about 0.1 occurrences134–130 Mya — about 0.1 occurrences130–127 Mya — about 0.1 occurrences127–124 Mya — about 0.1 occurrences91–87 Mya — about 5 occurrences87–84 Mya — about 5 occurrences84–81 Mya — about 6 occurrences81–77 Mya — about 6 occurrences77–74 Mya — about 6 occurrences74–71 Mya — about 10 occurrences71–67 Mya — about 14 occurrences67–64 Mya — about 6 occurrences143.1 Mya72.2 Mya163 Mya64 Mya

62 occurrences of Oxytoma (Hypoxytoma) 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

62 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

16 formations

Pawkowki — 49.10°N, 111.15°WPawkowki — 49.10°N, 111.35°WPawkowki — 49.10°N, 111.21°WPawkowki — 49.01°N, 111.21°WPawkowki — 49.10°N, 112.14°WPawkowki — 49.19°N, 111.89°WPierre Shale — 43.25°N, 104.27°WPierre Shale — 43.31°N, 104.22°WBearpaw — 48.03°N, 106.33°WBearpaw — 48.19°N, 106.39°WBearpaw — 48.27°N, 106.14°WWapiabi — 52.79°N, 116.86°WWapiabi — 53.00°N, 115.00°Wopoka — 51.32°N, 21.95°Emarly chalk — 51.28°N, 21.90°Emarly chalk — 51.22°N, 21.43°EEastend — 49.53°N, 110.29°WBearpaw — 49.88°N, 110.29°WBearpaw — 49.47°N, 109.38°WFox Hills — 45.14°N, 100.88°WCurrier — 49.70°N, 126.62°WSpringhill — 49.00°S, 72.25°WForemost — 49.10°N, 110.82°WRibstone Creek — 52.83°N, 110.87°WPakowki — 49.37°N, 110.97°WBad Heart — 55.48°N, 118.20°WMancos Shale — 40.76°N, 108.89°W

Loading coastlines…

The named rock units Oxytoma (Hypoxytoma) has been recovered from, largest first. Drawn where the rock is now, not where it formed. 24 occurrences have no formation on record, which is common for older literature.

Oxytoma (Hypoxytoma) and its relatives

Late Cretaceous

Where Oxytoma (Hypoxytoma) and its relatives were recorded in the Late Cretaceous.

Found in the same rock

555 taxa

The Paleobiology Database records 56 sites for Oxytoma (Hypoxytoma), 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

18 references

Each of the 62 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. 6 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 Hypoxytoma Ichikawa, 1958

Source
GBIF
Credit
Yale Peabody Museum
Licence
CC0
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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

Keep going

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

Occurrence data from the Paleobiology Database, CC BY 4.0.