- Wu****a, Yangweizhouia.
Dolichometopidae Aegunaspis, Amphoton, Anoria,
Asperocare, Athabaskia, Athabaskiella, Atypicus, Basanellus, Bathyuriscidella, Bathyuriscus...
- Dresbachian. It
contains the
following genera:
Aegunaspis Amphoton Anoria Asperocare Athabaskia Athabaskiella Atypicus Basanellus Bathyuriscidella Bathyuriscus...
- Wu****a, Yangweizhouia.
Dolichometopidae Aegunaspis, Amphoton, Anoria,
Asperocare, Athabaskia, Athabaskiella, Atypicus, Basanellus, Bathyuriscidella, Bathyuriscus...
- (=Schizophorus)
Ascetopeltis Ascionepea Asiagena Asiatella Asilluchus Asiocephalus Asperocare Aspidaeglina Aspidagnostus (=Biragnostus)
Aspidochuangia Asteropyge Astenaspis...