Pterygometopidae

Pterygometopidae
Temporal range: Floian–Sheinwoodian
Calliops armatus dorsal view of the cephalon, collected from the Bromide Formation, Sandbian
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Trilobita
Order:
Phacopida
Suborder:
Phacopina
Superfamily:
Phacopoidea
Family:
Pterygometopidae

Reed, 1905
subfamilies
  • Pterigometopinae Reed, 1905
  • Chasmopinae Pillet, 1954
  • Eomonorachinae Pillet, 1954
  • Monorachinae Kramarenko, 1952

The Pterygometopidae are a family of trilobites, that is known from the Floian to the Katian (Ordovician), and reappears from the Telychian to the Sheinwoodian (Silurian). As part of the Phacopina suborder, its members have schizochroal eyes.