Archaeostraca

Archaeostraca is an extinct order of crustaceans in the subclass Phyllocarida.^[1] It first appeared in the Late Cambrian and became very diverse in both the Late Silurian and the Devonian.^[2]

Archaeostraca Temporal range: Late Cambrian–Upper Triassic[1][2] PreꞒ Ꞓ O S D C P T J K Pg N
Nahecaris stuertzi
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Malacostraca
Subclass:	Phyllocarida
Order:	†Archaeostraca Claus, 1888[1]
Suborders[1]
†Caryocaridina †Ceratiocaridina †Echinocaridina †Palaeopemphida †Pephricaridina †Rhinocaridina