Stratum.black
Cyphaspis — Cyphaspis
Cyphaspis — Vassia Atanassova - Spiritia, Wikimedia Commons, CC BY SA 4.0

Trilobite

Cyphaspis

Spiny aulacopleurid

Cyphaspis is a small Devonian proetid from the Moroccan Anti-Atlas with a bulbous glabella, long genal spines and, in some species, a long axial spine on the thorax. Well-prepared examples 2–3 cm long are popular; the spines are delicate and are often rebuilt. Several Moroccan species remain undescribed.

PhylumArthropoda
ClassTrilobita
OrderProetida
FamilyAulacopleuridae
GroupTrilobite
Rank (PBDB)genus· Paleobiology Database
Author(Burmeister 1843)· Paleobiology Database
Classification (PBDB)Arthropoda › Trilobita › Proetida › Otarionidae· Paleobiology Database
Range (PBDB)475–372 Ma· Paleobiology Database
PBDB occurrences128· Paleobiology Database

Photographs

Cyphaspis — Cyphaspis sp. (NHMUK PI It 26541)
Cyphaspis sp. (NHMUK PI It 26541) — © The Trustees of the Natural History Museum, London, Natural History Museum (London) Data Portal, CC BY 4.0
Cyphaspis — Cyphaspis Burmeister 1843 (NHMUK PI It 26545)
Cyphaspis Burmeister 1843 (NHMUK PI It 26545) — © The Trustees of the Natural History Museum, London, Natural History Museum (London) Data Portal, CC BY 4.0
Cyphaspis — Cyphaspis Burmeister 1843 (NHMUK PI It 26546)
Cyphaspis Burmeister 1843 (NHMUK PI It 26546) — © The Trustees of the Natural History Museum, London, Natural History Museum (London) Data Portal, CC BY 4.0

Age

Formations

Elsewhere

Cite this article

Stratum Study. "Cyphaspis" (Taxon). Stratum Study pack 2026.09, as of 2026-09-19. https://stratum.black/study/taxa/cyphaspis. Accessed 2026-09-20.

BibTeX · CSL-JSON

@misc{stratum-cyphaspis,
  title        = {Cyphaspis},
  author       = {{Stratum Study}},
  howpublished = {\url{https://stratum.black/study/taxa/cyphaspis}},
  year         = {2026},
  note         = {Taxon article, Stratum Study pack 2026.09, as of 2026-09-19; sources: stratum, pbdb, wikidata, commons, nhm. Accessed 2026-09-20.}
}

Citations carry the pack version and the article's as-of date so they resolve to the same text later. The facts themselves belong to the sources listed below; cite those for the science.