FIGURE 14 in Mollusks from late Mesozoic seep deposits, chiefly in California

FIGURE 14. Lyriochlamys complexicostata (Gabb, 1869) from Cretaceous seep carbonates in California, showing various stages of defoliation; all specimens from Hauterivian of Wilbur Springs except for that in fig B, which are from Rocky Creek (probably Valanginian). A. Small specimen with fine radial sculpture (USNM 597562). B. Large specimen in whom the main ribs appear sharp, note fragments of the same species on the far and lower left (GZG.INV.85002). C. Specimen with almost no shell preserved (USNM 597563). D. Specimen with fine radial ribs and rough commarginal wrinkles on the ears (USNM 597564). E. specimen in which the main ribs appear blunt (USNM 605206). F. Specimen with blunt vertical ribs on the ear; note abundant fragments of the brachiopod Peregrinella whiteyi at the lower side (USNM 597565).