Traits name details
original description
(of Trigonia formosa Lycett, 1860 †) Wright, T. (1860). On the subdivisions of the Inferior Oolite in the south of England, compared with the equivalent beds of that formation on the Yorkshire Coast. <em>The Quarterly Journal of the Geological Society of London.</em> 16: 1-48., available online at https://www.biodiversitylibrary.org/page/35427728 page(s): 41 [details]
basis of record
Lebküchner, R. (1932). Die Trigonien des süddeutschen Jura. <em>Palaeontographica.</em> 77: 1-120. page(s): 54 [details]
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