Polyancistrodorus

No picture of Polyancistrodorus was found. Wikipedia and Wikidata were searched and had none. iDigBio and GBIF were not searched: the Paleobiology Database does not place Polyancistrodorus firmly enough to tell it from something else bearing the same name, and a search on the name alone returns whichever of them was photographed. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

On record

Recorded, not inferred
Sits inside
AcritarchaPBDB
Diet
"photoautotroph"PBDB, for Acritarcha
Environment
marinePBDB, for Acritarcha

Time the record covers

At least 18 million years on record.

The record covers at least 475.6 Mya to 457.3 Mya. No occurrence read is dated outside 482.9 Mya to 449.6 Mya.

Ordovician — about 2 of 2 occurrencesOrdovician484–482 Mya — about 0.1 occurrences482–481 Mya — about 0.2 occurrences481–480 Mya — about 0.2 occurrences480–479 Mya — about 0.2 occurrences479–478 Mya — about 0.2 occurrences478–477 Mya — about 0.2 occurrences477–475 Mya — about 0.1 occurrences458–457 Mya — about 0.0 occurrences457–456 Mya — about 0.1 occurrences456–455 Mya — about 0.1 occurrences455–454 Mya — about 0.1 occurrences454–452 Mya — about 0.1 occurrences452–451 Mya — about 0.1 occurrences451–450 Mya — about 0.1 occurrences450–449 Mya — about 0.1 occurrences475.6 Mya457.3 Mya483.6 Mya448.9 Mya

2 occurrences of Polyancistrodorus 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

2 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

2 formations

Bromide — 34.00°N, 97.00°WLeetse — 59.87°N, 31.43°E

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

Polyancistrodorus and its relatives

Ordovician

Where Polyancistrodorus and its relatives were recorded in the Ordovician.

Found in the same rock

31 taxa

The Paleobiology Database records 2 sites for Polyancistrodorus, 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

2 references

Each of the 2 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. 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 Polyancistrodorus was found. Wikipedia and Wikidata were searched and had none.

iDigBio and GBIF were not searched: the Paleobiology Database does not place Polyancistrodorus firmly enough to tell it from something else bearing the same name, and a search on the name alone returns whichever of them was photographed.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

No 3D scan of Polyancistrodorus 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.

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

Keep going

What may have been alongside itAcritarcha through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Loeblich and Tappan 1969