original description
Martinson, G.G. (1965). Biostratigrafiya i fauna kontinental'nogo mela Fergany [Biostratigraphy and fauna of the continental Cretaceous of Fergana]. In: Melovyye kontinental'nyye otlozheniya Fergany. Nauka, Moskva, p. 101-139., available online at https://www.geokniga.org/books/6382
page(s): 112-113, pl. 1, figs 1-5 [details]
original description
(of Trigonioides (Trigonioides) guantouensis Z.-W. Gu & Q.-H. Ma, 1976 †) Gu, Z.-W.; Huang, B.-Y.; Chen, C.-Z.; Wen, S.-X.; Ma, Q.-H.; Lan, X.; Xu, J.-T.; Liu, L.; Wang, S.-M.; Wang, D.-Y.; Qiu, R.-Z.; Huang, Z.-Q.; Zhang, Z.-M.; Chen, J.-H.; Wu, P.-L. (1976). The Lamellibranch Fossils of China. Science Press, Beijing, 522 pp.
page(s): 356, pl. 109, fig. 16 [details] Available for editors [request]
From editor or global species database
Type locality Martinson gave two localities, but it is unclear from where the holotype comes from: "Yugo-Vostochnaya Fergana - levyy bereg r. Karakuldzha, zapadnyye otrogi Gissarskogo khrebta - rayon pos. Derbent" [Southeast Fergana valley - left bank of the river Kara-Kulja (Kyrgyzstan); western spurs of the Gissar ridge - area of the village Derbent (Uzbekistan)] [details]