Traits name details
original description
Kitchin, F. L. (1903). The Jurassic fauna of Cutch. [Vol. III Part II] The Lamellibranchiata, [no. 1] genus <em>Trigonia</em>. <em>Memoirs of the Geological Survey of India, series 9.</em> 3(2)1, 1-122. page(s): 80, pl. 9, fig. 1 [details]
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