A Rosetta Stone for eastern Pacific Caecidae (Gastropoda: Caenogastropoda)
FIGURE 39. Caecum quadratum. A. Profile view (LACM 1971-98.36). B. Ventral view (LACM 1969-29.57). C. Operculum, exterior surface (LACM 1971-98.36). D. Operculum, interior surface (LACM 1971-98.36).E. Syntype, NHMUK 1857.6.4.1529. F. C. compactum syntype, NHMUK 1857.6.4.1530. G. C. dalli, holotype USNM 340724.
FIGURE 40. Caecum quadratum shells at different growth stages: A. protoconch and teleoconchs I to II (LACM 1971-98.36). B. surface of teleoconch I (LACM 1971-98.36). C. surface of teleoconch II (LACM 1971-98.36). D. teleoconchs I to IV (LACM 1971-98.36). E. surface of teleoconch III (LACM 1971-98.36). F. surface of teleoconch IV (LACM 1971-98.36). G. teleoconchs III to V (LACM 1971-98.36). H. surface of teleoconch V (LACM 1971-98.36). I. teleoconch V (LACM 1969-29.57).
FIGURE 41. Caecum quadratum. A. Conceptual reconstruction of growth stages. B. Species distribution map.
Punta San Felipe & San Felipe & Norte & Marua Estero