FIG. 6 in Quaternary and Recent shells of Ocenebra erinaceus (Linnaeus, 1758) and O. brevirobusta Houart, 2000 (Mollusca, Muricidae, Ocenebrinae): reflections on the intra- and interspecific variations

FIG. 6. — Simplistic representation of the ontogeny of the spiral cords of Ocenebra erinaceus (Linnaeus, 1758) (population from Malaga, Spain). Abbreviations: ABP, abapical primary cord of the siphonal canal; abs, abapical secondary cord of the sutural ramp; adis, adapical secondary cord of the siphonal canal; ADP, adapical primary cord of the siphonal canal; ads, adapical secondary cord of the sutural ramp; IP, infrasutural primary cord; MP, median primary cords of the siphonal canal; ms, median secondary cord of the siphonal canal; P1, shoulder cord; P2-P6, primary cords of the convex part of the whorl (w.); s1-s6, secondary cords of the convex part of the whorl.