Cyamocephalus

Searched as Cyamocephalus loganensis. The Paleobiology Database treats Cyamocephalus as the accepted name.

Cyamocephalus is a genus of synziphosurine, a paraphyletic group of fossil chelicerate arthropods. Cyamocephalus was regarded as part of the clade Planaterga. Fossils of the single and type species, C. loganensis, have been discovered in deposits of the Silurian-aged Patrick Burn Formation in Lesmahagow, Scotland. Cyamocephalus is one of the two members of the family Pseudoniscidae, the other being Pseudoniscus. Cyamocephalus differ from Pseudoniscus by the fused tergites of 6th and 7th opisthosomal segments.

Cyamocephalus

Junnn11 · CC BY-SA 4.0 · 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
PlanatergaPBDB
Motility
actively mobilePBDB, for Arthropoda

Time the record covers

At most 5.7 million years on record.

The one occurrence read is dated to somewhere between 438.6 Mya and 432.9 Mya, which is a dating window rather than a span.

Silurian — about 1 of 1 occurrenceSilurian439–438 Mya — about 0.0 occurrences438–438 Mya — about 0.0 occurrences438–438 Mya — about 0.0 occurrences438–438 Mya — about 0.0 occurrences438–438 Mya — about 0.0 occurrences438–437 Mya — about 0.0 occurrences437–437 Mya — about 0.0 occurrences437–437 Mya — about 0.0 occurrences437–437 Mya — about 0.0 occurrences437–436 Mya — about 0.0 occurrences436–436 Mya — about 0.0 occurrences436–436 Mya — about 0.0 occurrences436–436 Mya — about 0.0 occurrences436–436 Mya — about 0.0 occurrences436–435 Mya — about 0.0 occurrences435–435 Mya — about 0.0 occurrences435–435 Mya — about 0.0 occurrences435–435 Mya — about 0.0 occurrences435–434 Mya — about 0.0 occurrences434–434 Mya — about 0.0 occurrences434–434 Mya — about 0.0 occurrences434–434 Mya — about 0.0 occurrences434–434 Mya — about 0.0 occurrences434–433 Mya — about 0.0 occurrences433–433 Mya — about 0.0 occurrences433–433 Mya — about 0.0 occurrences439.1 Mya432.4 Mya

1 occurrence of Cyamocephalus on record, most of them in the Silurian. 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

1 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

1 formation

Patrick Burn — 55.61°N, 3.99°W

Loading coastlines…

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

Cyamocephalus and its relatives

Silurian

Where Cyamocephalus and its relatives were recorded in the Silurian.

Found in the same rock

The Paleobiology Database records no fossil sites for Cyamocephalus, so there is nothing to compare it with.

Entered from

1 reference

Each of the 1 occurrence 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 doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Cyamocephalus

Credit
Junnn11
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Cyamocephalus 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 itPlanaterga through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Currie 1927