Cephalaspidida

Cephalaspidida is an extinct order of jawless fish in the subclass Cornuata.

Cephalaspidida

User:Apokryltaros · CC BY 2.5 · via Wikipedia/Commons. 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
CephalaspidomorphiPBDB
Diet
carnivorePBDB, for Cephalaspidomorphi
Life habit
nektonicPBDB, for Cephalaspidomorphi
Motility
fast-movingPBDB, for Cephalaspidomorphi

Time the record covers

At least 44 million years on record.

The record covers at least 432.9 Mya to 387.95 Mya. No occurrence read is dated outside 438.6 Mya to 385.9 Mya.

Silurian — about 1 of 10 occurrencesSilurianDevonian — about 9 of 10 occurrencesDevonian440–438 Mya — about 0.1 occurrences438–436 Mya — about 0.3 occurrences436–434 Mya — about 0.3 occurrences434–432 Mya — about 0.2 occurrences421–420 Mya — about 0.0 occurrences420–418 Mya — about 0.3 occurrences418–416 Mya — about 0.3 occurrences416–414 Mya — about 0.3 occurrences414–412 Mya — about 0.2 occurrences394–392 Mya — about 2 occurrences392–390 Mya — about 2 occurrences390–389 Mya — about 2 occurrences389–387 Mya — about 1 occurrence387–385 Mya — about 0.4 occurrences432.9 Mya387.95 Mya440 Mya385 Mya

10 occurrences of Cephalaspidida 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

10 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

6 formations

Narva — 59.38°N, 28.19°ENarva — 57.55°N, 25.29°EPärnu — 58.39°N, 24.50°EAruküla — 59.37°N, 25.08°EFreshwater West — 52.49°N, 2.52°WXiushan — 29.02°N, 109.84°E

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

Cephalaspidida and its relatives

Devonian

Where Cephalaspidida and its relatives were recorded in the Devonian.

Found in the same rock

61 taxa

The Paleobiology Database records 10 sites for Cephalaspidida, 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 10 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 content1

Picture of Cephalaspidida

Credit
User:Apokryltaros
Licence
CC BY 2.5
Commercial use
the licence allows it

No 3D scan of Cephalaspidida 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.

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 itCephalaspidomorphi through timeFormations of the DevonianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Moy-Thomas and Mile 1971