Traits name details
original description
Sowerby, J. De C. (1840). Organic remains collected by Mr. Malcolmson and described by Mr. James de Carle Sowerby. In: Malcolmson, J.G. On the Fossils of the Eastern Portion of the Great Basaltic District of India. <em>Transactions of the Geological Society of London, Series 2.</em> 5(3): 550-551, pl. 47., available online at https://www.biodiversitylibrary.org/page/36236116 page(s): pl. 47, figs 20-23 [details]
additional source
Hislop, S. (1860). On the Tertiary deposits, associated with Trap-rock, in the East Indies. <em>The Quarterly Journal of the Geological Society of London.</em> 16: 154-182., available online at https://www.biodiversitylibrary.org/page/35427895 page(s): 167 [details]
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