Trilobita - Asaphida - Ptychaspididae
Synonyms: Coreanocephalus Kobayashi 1935, Quadraticephalus Sun 1925
Parent taxon: Ptychaspididae according to P. A. Jell and J. M. Adrain 2002
See also Sepkoski 2002
Sister taxa: Alborsella, Eoptychaspis, Eowuhuia, Euptychaspis, Idiomesus, Imlerella, Kathleenella, Keithia, Keithiella, Macronoda, Plectrella, Proricephalus, Ptychaspis, Saukioides, Sunwaptia, Wilcoxaspis
Subtaxa: Changia chinensis Quadraticephalus elongatus
Type: Changia chinensis
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Ordovician of Australia (1 collection), China (1)
• Cambrian of Australia (5), China (5), South Korea (4)
Total: 16 collections including 19 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.