page_title: Eodiscina
section_title: Taxonomy
hierarchical_section_title: Eodiscina / Taxonomy
caption_attribution_description: English: Cladogram of the relations between the families of the Suborder Eodiscina and with the Agnostioidea, according to Jell, 1975
context_page_description: Eodiscina is a suborder of trilobite arthropods. The Eodiscina first developed near the end of the Lower Cambrian period and became extinct at the end of the Middle Cambrian. Species are tiny to small, and have a thorax of two or three segments. Eodiscina includes six families classified under one superfamily, Eodiscoidea.
context_section_description: The Eodiscina are mostly considered the more primitive suborder of the Agnostida, and the Agnostina the more advanced. Some scholars do not consider the Agnostina true trilobites, and consequently rejected the idea that they were related to the Eodiscina. Consequently, these scientists have proposed to elevate the group to ordinal level, which would thus be called Eodiscida Kobayashi, 1939.
caption: Cladogram of the relations between the families of the Eodiscina, according to Jell, 1975[2]
exif: {}