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单词 Eodiscina
释义

Eodiscina

英语百科

Eodiscina

Cladogram of the relations between the families of the Eodiscina, according to Jell, 1975[2]
Pagetia taijiangensis, 3mm, from Kaili, Guizhou, China

Eodiscina is a suborder of trilobites, a well known group of marine arthropods. The Eodiscina first developed near the end of the Lower Cambrian period (late Atdabanian) and became extinct at the end of the Middle Cambrian. They are small or very small, and have a thorax of two or three segments. Eodiscina includes six families classified under one superfamily, Eodiscoidea.

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