Polybranchiaspis

No picture of Polybranchiaspis was found. Wikipedia, Wikidata and iDigBio were searched and had none. 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 Polybranchiaspis, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
PolybranchiaspididaePBDB
Motility
actively mobilePBDB, for Chordata

Time the record covers

At least 8.1 million years on record.

The record covers at least 422.7 Mya to 414.6 Mya. No occurrence read is dated outside 426.7 Mya to 413.02 Mya.

Silurian — about 1 of 7 occurrencesSilurianDevonian — about 6 of 7 occurrencesDevonian427–426 Mya — about 0.1 occurrences426–426 Mya — about 0.1 occurrences426–425 Mya — about 0.1 occurrences425–425 Mya — about 0.1 occurrences425–424 Mya — about 0.1 occurrences424–424 Mya — about 0.1 occurrences424–423 Mya — about 0.1 occurrences423–423 Mya — about 0.1 occurrences423–422 Mya — about 0.0 occurrences420–419 Mya — about 0.2 occurrences419–419 Mya — about 0.4 occurrences419–418 Mya — about 0.4 occurrences418–418 Mya — about 0.4 occurrences418–417 Mya — about 0.4 occurrences417–417 Mya — about 0.4 occurrences417–416 Mya — about 0.4 occurrences416–416 Mya — about 0.4 occurrences416–415 Mya — about 0.4 occurrences415–415 Mya — about 0.4 occurrences415–414 Mya — about 0.4 occurrences414–414 Mya — about 0.7 occurrences414–413 Mya — about 0.7 occurrences413–413 Mya — about 0.7 occurrences422.7 Mya414.6 Mya427.2 Mya412.5 Mya

7 occurrences of Polybranchiaspis on record, most of them in the Devonian. 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

7 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

4 formations

Xishancun — 25.49°N, 103.80°EYulungssu — 25.48°N, 103.78°EXitun — 25.49°N, 103.80°ESi Ka — 23.35°N, 105.29°E

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

Polybranchiaspis and its relatives

Devonian

Where Polybranchiaspis and its relatives were recorded in the Devonian.

Found in the same rock

82 taxa

The Paleobiology Database records 4 sites for Polybranchiaspis, 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

3 references

Each of the 7 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 Polybranchiaspis was found. Wikipedia, Wikidata and iDigBio were searched and had none.

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 Polybranchiaspis, or no answer at all. This entry cannot say which.

No 3D scan of Polybranchiaspis 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 itPolybranchiaspididae through timeFormations of the DevonianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Liu 1965