Archaeostraca
Archaeostraca is an extinct order of crustaceans in the subclass Phyllocarida. It first appeared in the Late Cambrian and became very diverse in both the Late Silurian and the Devonian.
Archaeostraca is an extinct order of crustaceans in the subclass Phyllocarida. It first appeared in the Late Cambrian and became very diverse in both the Late Silurian and the Devonian.