Penoperculoides cubensis Cole & Gravell, 1952
1-5: Middle Eocene, Cuba. 1, 3, Horizontal sections, x 20; 2, axial section, x 20; 4, 5, exterior, x 15 (from Cole and Gravell, 1952).
Copyright: Cole and Gravell, 1952 / Loeblich & Tappan, 1987