Note 134 — 14. PACHYLASMA—Nov. Genus.[133] Pl. 19, 20.
Reading edition
Dr. Philippi called this species a Chthamalus; giving this generic name from an examination only of the separated valves in a fossil condition.
Reading edition
Dr. Philippi called this species a Chthamalus; giving this generic name from an examination only of the separated valves in a fossil condition.