Traits name details
original description
Newton, R.B. (1906). Notice of some Fossils from Singapore discovered by John B. Scrivenor, F.G.S., Geologist to the Federated Malay States. <em>Geological Magazine, new series. Decade V.</em> 3: 487-496., available online at https://www.biodiversitylibrary.org/page/30860603 page(s): 493-494, pl. 25, figs 2, 3 [details]
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