Cyamocephalus

Cyamocephalus is a genus of synziphosurine,^[1] a paraphyletic group of fossil chelicerate arthropods.^[2][3] Cyamocephalus was regarded as part of the clade Planaterga.^{[2][4][5][6][3][7]} Fossils of the single and type species, C. loganensis, have been discovered in deposits of the Silurian-aged Patrick Burn Formation in Lesmahagow, Scotland (in the United Kingdom). Cyamocephalus is one of the two members of the family Pseudoniscidae, the other being Pseudoniscus.^[1][7][2] Cyamocephalus differ from Pseudoniscus by the fused tergites of 6th and 7th opisthosomal segments.^[1]

Cyamocephalus Temporal range: Silurian PreꞒ Ꞓ O S D C P T J K Pg N
Reconstruction of Cyamocephalus loganensis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Chelicerata
Clade:	Prosomapoda
Clade:	Planaterga
Family:	†Pseudoniscidae
Genus:	†Cyamocephalus Currie, 1927
Type species
†Cyamocephalus loganensis Currie, 1927