On some Vetigastropoda (Mollusca, Gastropoda) from the Plio-Pleistocene of the Philippines with descriptions of three new species

Abstract

We studied representatives of seven vetigastropod families in an extremely well-preserved Plio-Pleistocene mollusc fauna found in relatively deep water sediments (c. 200-300 m paleodepth) from the north-western Philippines. The fauna is systematically described and its paleoenvironmental and paleobiogeographical character is explored. Twenty-six species of gastropods were studied, three of which are described as new: Halystina conoidea n. sp., Calliotropis arenosa n. sp. and Ethminolia wareni n. sp.

Revision of Scissurellidae, Anatomidae and Fissurellidae (Gastropoda: Vetigastropoda) from the Plio-Pleistocene of the Philippines

“…This paper continues the taxonomic investigation of the "Cabarruyan" fauna. The holoplanktonic gastropods (Pterotracheoidea, Janthinoidea, Thecosomata and Gymnosomata) of this fauna were previously treated in Janssen (2007) and the vetigastropod families Colloniidae, Seguenziidae, Calliotropidae, Calliostomatidae, Trochidae, Solariellidae and Turbinidae were covered in Helwerda et al (2014). The Vetigastropoda are explored further here, focusing on Scissurellidae, Anatomidae and Fissurellidae.…”