Chelodina

Chelodina is a suborder of polyplacophoran mollusc that appeared during the Cambrian and became extinct during the Cretaceous. It is known from fossils from Europe and North America.

No picture of Chelodina was found. Wikipedia and iDigBio were searched and had none. Wikidata has a picture filed under this name, but nothing tied it to Chelodina 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 Chelodina, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
PaleoloricataPBDB

Time the record covers

At least 488 million years on record.

The record covers at least 488.9 Mya to 11.7 ka. No occurrence read is dated outside 493.5 Mya to 0 Mya.

Cambrian — about 3 of 54 occurrencesOrdovician — about 21 of 54 occurrencesOrdovicianSilurian — about 2 of 54 occurrencesDevonian — about 5 of 54 occurrencesDevonianCarboniferous — about 5 of 54 occurrencesCarboniferousPermian — about 3 of 54 occurrencesPermianEarly Triassic — about 0 of 54 occurrencesMiddle Triassic — about 0 of 54 occurrencesLate Triassic — about 0 of 54 occurrencesEarly Jurassic — about 0 of 54 occurrencesMiddle Jurassic — about 0 of 54 occurrencesLate Jurassic — about 0 of 54 occurrencesEarly Cretaceous — about 0 of 54 occurrencesLate Cretaceous — about 4 of 54 occurrencesPaleocene — about 1 of 54 occurrencesEocene — about 1 of 54 occurrencesOligocene — about 0 of 54 occurrencesMiocene — about 2 of 54 occurrencesPliocene — about 2 of 54 occurrencesPleistocene — about 2 of 54 occurrences503–487 Mya — about 3 occurrences487–470 Mya — about 9 occurrences470–453 Mya — about 8 occurrences453–436 Mya — about 4 occurrences436–419 Mya — about 2 occurrences419–403 Mya — about 1.0 occurrences403–386 Mya — about 1 occurrence386–369 Mya — about 3 occurrences319–302 Mya — about 5 occurrences302–285 Mya — about 0.7 occurrences285–268 Mya — about 1 occurrence268–252 Mya — about 1 occurrence84–67 Mya — about 4 occurrences67–50 Mya — about 1 occurrence50–34 Mya — about 0.9 occurrences17–0 Mya — about 9 occurrences488.9 Mya11.7 ka503 Mya0 Mya

54 occurrences of Chelodina on record, most of them in the Ordovician. The Paleobiology Database records this as a living group. 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

54 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

22 formations

Kindblade — 34.38°N, 96.93°WKindblade — 34.37°N, 97.13°WKindblade — 34.42°N, 97.27°WLexington Limestone — 37.84°N, 84.46°WLexington Limestone — 37.65°N, 84.95°WLexington Limestone — 37.64°N, 84.66°WLexington Limestone — 37.89°N, 84.51°WLexington Limestone — 37.69°N, 84.76°WLexington Limestone — 37.67°N, 84.94°WVanport — 39.07°N, 82.45°WVanport — 40.99°N, 80.33°WNotch Peak — 38.70°N, 113.52°WTorquay — 50.47°N, 3.50°WRedbank Plains — 27.65°S, 152.87°ERedbank Plains — 27.65°S, 152.87°EMójcza Limestone — 50.83°N, 20.68°EDobrotiva — 50.00°N, 14.00°ELoray — 39.21°N, 114.98°WGarra — 33.95°S, 148.82°EBird Spring — 36.60°N, 114.79°WFrancis — 34.76°N, 96.68°WLazy Bend — 32.05°N, 95.50°WSlite Beds — 57.73°N, 18.77°EEpiskopi — 37.33°N, 23.46°EPutnam Hill — 40.48°N, 81.45°WEminence — 37.24°N, 91.26°WGazelle — 41.37°N, 122.13°WLexington — 37.99°N, 84.82°WWaite — 22.87°S, 134.87°EAllingham — 19.72°S, 145.60°ESarka — 49.97°N, 15.35°E

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The named rock units Chelodina has been recovered from, largest first. Drawn where the rock is now, not where it formed. 13 occurrences have no formation on record, which is common for older literature.

Chelodina and its relatives

Ordovician

Where Chelodina and its relatives were recorded in the Ordovician.

Found in the same rock

757 taxa

The Paleobiology Database records 45 sites for Chelodina, 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

28 references

Each of the 54 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. 16 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 content0

No picture of Chelodina was found. Wikipedia and iDigBio were searched and had none.

Wikidata has a picture filed under this name, but nothing tied it to Chelodina 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 Chelodina, or no answer at all. This entry cannot say which.

No 3D scan of Chelodina 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.

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 itPaleoloricata through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Bergenhayn 1960