Holmes, S.C.A.
The periproctal plates of Discoidea - 470-478p. Illustration
Extract
The periproctal plates of three specimens are here described and a comparison made with related genera, the latter including a description of the periproctals of Pseudodiscoidea.
Periproctal plates
Discoidea
The periproctal plates of Discoidea - 470-478p. Illustration
Extract
The periproctal plates of three specimens are here described and a comparison made with related genera, the latter including a description of the periproctals of Pseudodiscoidea.
Periproctal plates
Discoidea