Ptychaspididae

Ptychaspididae is a family of trilobites, containing the following genera:

• Alborsella
• Changia
• Eoptychaspis
• Eowuhuia
• Euptychaspis
• Idiomesus
• Kathleenella
• Keithia
• Keithiella
• Macronoda
• Plectrella
• Proricephalus
• Ptychaspis
• Saukioides
• Sunwaptia
• Wilcoxaspis

References