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Proasaphiscus yabei

Trilobita - Ptychopariida - Proasaphiscidae

Taxonomy
Proasaphiscus yabei was named by Resser and Endo (1935) [in Kobayashi et al.]. It is not extant. It is the type species of Proasaphiscus.

Sister species lacking formal opinion data
P. butes, P. sibiricus, P. parvus