Eodiscina

Eodiscina Temporal range: Lower and Middle Cambrian PreꞒ Ꞓ O S D C P T J K Pg N
Internal mould of Eodiscus punctatus scanicus, 8mm in length. collected from the lower part of the Menevia Formation (Mid Cambrian Drumian Stage), Mawddachites hicksi Biozone, of Dwrhyd near Nine Wells on the St David's Peninsula, SW Wales.
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	†Trilobita (?)
Order:	†Agnostida
Suborder:	†Eodiscina Kobayashi, 1939
Superfamily:	†Eodiscoidea Raymond, 1913
Families
Eodiscidae Calodiscidae Hebediscidae Tsunyidiscidae Weymouthiidae Yukoniidae

Eodiscina is trilobite suborder. The Eodiscina first developed near the end of the Lower Cambrian period (late Atdabanian) and became extinct at the end of the Middle Cambrian. Species are tiny to small, and have a thorax of two or three segments.^[1] Eodiscina includes six families classified under one superfamily, Eodiscoidea.