In a message dated 7/28/01 12:16:38 PM EST, Adam.Yates@bristol.ac.uk writes: << Thats why you get Platypi very similar to the Australian Tertiary Platypi (genus Obdurodon) in the Palaeocene of South America. >> I think the proper pedantic plural of platypus is platypodes, not "platypi." (Likewise for octopus: octopodes, not "octopi.")