Anisomyon

Anisomyon

via iDigBio · CC BY · via iDigBio. 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
SiphonariidaePBDB
Diet
grazerPBDB, for Siphonariidae
Life habit
epifaunalPBDB, for Siphonariidae
Motility
facultatively mobile, attachedPBDB, for Siphonariidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 66 million years on record.

The record covers at least 132.6 Mya to 66 Mya. No occurrence read is dated outside 137.05 Mya to 61.66 Mya.

Early Cretaceous — about 5 of 77 occurrencesEarly CretaceousLate Cretaceous — about 71 of 77 occurrencesLate CretaceousPaleocene — about 1 of 77 occurrences139–136 Mya — about 0.2 occurrences136–133 Mya — about 0.6 occurrences133–131 Mya — about 0.2 occurrences123–120 Mya — about 0.8 occurrences120–118 Mya — about 0.7 occurrences118–115 Mya — about 0.5 occurrences115–112 Mya — about 0.5 occurrences112–110 Mya — about 0.4 occurrences110–107 Mya — about 0.4 occurrences107–105 Mya — about 0.4 occurrences105–102 Mya — about 0.3 occurrences102–99 Mya — about 1.0 occurrences99–97 Mya — about 2 occurrences97–94 Mya — about 2 occurrences94–92 Mya — about 2 occurrences92–89 Mya — about 2 occurrences89–86 Mya — about 3 occurrences86–84 Mya — about 10 occurrences84–81 Mya — about 7 occurrences81–78 Mya — about 7 occurrences78–76 Mya — about 7 occurrences76–73 Mya — about 7 occurrences73–71 Mya — about 8 occurrences71–68 Mya — about 8 occurrences68–65 Mya — about 6 occurrences65–63 Mya — about 0.6 occurrences63–60 Mya — about 0.3 occurrences132.6 Mya66 Mya139 Mya60 Mya

77 occurrences of Anisomyon on record, most of them in the Late Cretaceous. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

77 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

29 formations

Pierre Shale — 43.27°N, 104.27°WPierre Shale — 43.31°N, 104.22°WPierre Shale — 44.19°N, 99.70°WPierre Shale — 40.06°N, 106.39°WPierre Shale — 44.98°N, 104.02°WMancos Shale — 36.35°N, 109.82°WMancos Shale — 35.73°N, 110.82°WMancos Shale — 40.76°N, 108.89°WTarapuhi Grit — 42.57°S, 173.52°EPrairie Bluff — 32.61°N, 88.16°WPrairie Bluff — 32.23°N, 87.50°WPrairie Bluff — 32.14°N, 87.42°WPrairie Bluff — 31.97°N, 86.72°WPrairie Bluff — 31.98°N, 86.00°WPrairie Bluff — 32.05°N, 86.78°WMount Laurel Sand — 39.55°N, 75.65°WNacatoch Sand — 32.10°N, 96.47°WNacatoch Sand — 33.61°N, 95.05°WNacatoch Sand — 31.31°N, 96.90°WLewis Shale — 43.27°N, 104.27°WOwl Creek — 34.75°N, 88.93°WCorsicana Marl — 31.30°N, 96.90°WUpper Haborogawa — 44.40°N, 141.83°EHaslam — 49.52°N, 124.88°WHaslam — 49.02°N, 123.95°WBearpaw — 48.03°N, 106.33°WBearpaw — 48.13°N, 106.53°WGreenhorn Limestone — 38.28°N, 104.72°WTropic Shale — 37.07°N, 111.62°WTinton — 40.30°N, 74.10°WMerchantville — 39.54°N, 75.72°WCoffee Sand — 34.26°N, 88.70°WWolfe City — 30.27°N, 97.74°WCalcaire de Vigny — 49.07°N, 1.92°EFunks — 38.55°N, 122.03°WKallankurichchi — 11.14°N, 79.12°ETe Wera Sandstone — 38.41°S, 177.31°EBearpaw — 49.36°N, 110.42°WConway Siltstone — 42.55°S, 173.50°E

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The named rock units Anisomyon has been recovered from, largest first. Drawn where the rock is now, not where it formed. 5 further formations hold fewer occurrences each and are not listed. 5 occurrences have no formation on record, which is common for older literature.

Anisomyon and its relatives

Late Cretaceous

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

Found in the same rock

1,170 taxa

The Paleobiology Database records 75 sites for Anisomyon, 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

32 references

Each of the 77 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. 20 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 Anisomyon

Source
iDigBio
Credit
via iDigBio
Licence
CC BY
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 itSiphonariidae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Meek and Hayden 1860