FIGURE 1–7. 1 in Acteonidae, Bullinidae and Ringiculidae (Gastropoda: Heterobranchia) from the Plio-Pleistocene of the Philippines

FIGURE 1–7. 1. Japonacteon sieboldii (Reeve, 1842). RGM 961.831. Locality Anda4. (a) rear view, (b) apertural view, (c) basal view, (d) apical view. For these and remaining figures, all material derives from the Piazencian or Gelasian of the Santa Cruz Formation of Cabarruyan Island or nearby Luzon Island, Philippines. Scale bars = 1 mm. 2. Japonacteon sieboldii (Reeve, 1842). RGM 961.830. Locality Roxas. (a) apertural view. 3. Japonacteon sieboldii (Reeve, 1842). RGM 961.739. Locality Anda4. (a) apertural view, (b) apical view. 4. Bathyacteon valdesi nov. spec.. Paratype RGM 961.746. Locality AndaDeVos. (a) apertural view, (b) apical view. 5. Bathyacteon valdesi nov. spec.. Holotype RGM 961.786. Locality AndaDeVos. (a) rear view, (b) apertural view, (c) basal view, (d) apical view. 6. Acteon spec 1. RGM 961.768. Locality Anda4. (a) rear view, (b) apertural view, (c) basal view, (d) apical view. 7. Acteon spec 1. RGM 961.741. Locality Anda4. (a) apertural view, (b) apical view.