A checklist of Australian marine Cenozoic Mollusca Author Darragh, Thomas A. text Memoirs of Museum Victoria 2024 2024-08-23 83 37 206 https://doi.org/10.24199/j.mmv.2024.83.02 journal article 10.24199/j.mmv.2024.83.02 1447-2554 Splendrillia formosa Powell, 1944 Splendrillia formosa Powell, 1944: 31 , pl. 2, fig. 5. Distribution . Otway Basin: Muddy Creek Formation ( type ). Age : middle Miocene. Syntomodrillia Woodring, 1928