Polydesmia

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

On record

Recorded, not inferred
Sits inside
PolydesmiidaePBDB
Diet
carnivorePBDB, for Actinocerida
Life habit
nektobenthicPBDB, for Actinocerida
Motility
actively mobilePBDB, for Actinocerida
Vision
well-developedPBDB, for Cephalopoda
Environment
marinePBDB, for Cephalopoda

Time the record covers

At least 6.9 million years on record.

The record covers at least 468 Mya to 461.1 Mya. No occurrence read is dated outside 478.8 Mya to 458.2 Mya.

Ordovician — about 11 of 11 occurrencesOrdovician479–479 Mya — about 0.0 occurrences479–478 Mya — about 0.1 occurrences478–477 Mya — about 0.1 occurrences477–476 Mya — about 0.7 occurrences476–476 Mya — about 0.7 occurrences476–475 Mya — about 0.7 occurrences475–474 Mya — about 0.7 occurrences474–474 Mya — about 0.7 occurrences474–473 Mya — about 0.7 occurrences473–472 Mya — about 0.7 occurrences472–471 Mya — about 0.7 occurrences471–471 Mya — about 0.7 occurrences471–470 Mya — about 0.7 occurrences470–469 Mya — about 0.7 occurrences469–469 Mya — about 0.7 occurrences469–468 Mya — about 0.5 occurrences468–467 Mya — about 0.1 occurrences467–466 Mya — about 0.1 occurrences466–466 Mya — about 0.1 occurrences466–465 Mya — about 0.1 occurrences465–464 Mya — about 0.1 occurrences464–463 Mya — about 0.1 occurrences463–463 Mya — about 0.1 occurrences463–462 Mya — about 0.1 occurrences462–461 Mya — about 0.1 occurrences461–461 Mya — about 0.3 occurrences461–460 Mya — about 0.3 occurrences460–459 Mya — about 0.3 occurrences459–458 Mya — about 0.3 occurrences458–458 Mya — about 0.1 occurrences468 Mya461.1 Mya479.3 Mya457.7 Mya

11 occurrences of Polydesmia on record, most of them in the Ordovician. 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

11 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

5 formations

Xia Majiagou — 40.00°N, 118.00°EXia Majiagou — 39.00°N, 118.00°EXia Majiagou — 41.00°N, 118.00°EXia Majiagou — 40.00°N, 123.00°EXia Majiagou — 42.00°N, 126.00°EShan Majiagou — 36.00°N, 114.00°EBeiYanZhuang — 37.00°N, 118.00°EMaggol — 37.15°N, 128.92°EZhouzishan — 39.00°N, 106.00°E

Loading coastlines…

The named rock units Polydesmia has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Polydesmia and its relatives

Ordovician

Where Polydesmia and its relatives were recorded in the Ordovician.

Found in the same rock

65 taxa

The Paleobiology Database records 11 sites for Polydesmia, 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

7 references

Each of the 11 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content0

No picture of Polydesmia was found. iDigBio was searched and had none.

Wikidata has a picture filed under this name, but nothing tied it to Polydesmia itself, so it was not used.

Wikipedia and 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 Polydesmia, or no answer at all. This entry cannot say which.

No 3D scan of Polydesmia 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 itPolydesmiidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Lorenz 1906