Preangerian (Late miocene) Mollusca from a hill near Sekurau, northern Kutai, Kalimantan Timur (East Borneo) : Comments on Acantinella, Preangaria and Taurasia (Muricidae, Drupinae) : Mollusca from Preangarian deposits of Mandul Island, northeastern Kalimantan Timur (East Borneo) / C. Beets
Preangerian (Late miocene) Mollusca from a hill near Sekurau, northern Kutai, Kalimantan Timur (East Borneo) : Comments on Acantinella, Preangaria and Taurasia (Muricidae, Drupinae) : Mollusca from Preangarian deposits of Mandul Island, northeastern Kalimantan Timur (East Borneo)