Figure 3. Summary of Assilina/Pellatispira/Biplanispira and Lacazinella faunas in the Indo-Pacific realm. Global Sea floor Topography from Satellite Altimetry, by Smith, W.H.F.and Sandwell, D.T. 1997. Available on the National Geophysics Data Center introductory page, with the image below being an extract from this file.