Purschke, Günter and Jouin-Toulmond, Claude 1993. Ultrastructure of presumed ocelli in Parenterodrilus taenioides (Polychaeta, Protodrilidae) and their phylogenetic significance. Acta Zoologica 74(3): 247-256.
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Purschke, G.; Jouin-toulmond, C.
1993
Ultrastructure of presumed ocelli in Parenterodrilus taenioides (Polychaeta, Protodrilidae) and their phylogenetic significance