original description
Martinson, G. G. (1961). Mezozoiskie i Kaynozoyskie Molluski Kontinentalnykh Otlozheniy Sibirskoy Platformy, Zabaykalya i Mongolii [Mesozoic and Cenozoic Mollusca of the continental deposits of the Sibirican platform, Transbaikalia and Mongolia]. <em>Trudy Baikal'skoi Limnologicheskoi Stantsii [Transactions of Baikalian Limnologic Station].</em> 19:1–332 p., 26 pl. In Russian.
page(s): pl. 17, fig. 1; note: no description [details] Available for editors [request]
From editor or global species database
Taxonomic remark Not indicated as new species in Martinson (1961, as Trigonioides), but validly introduced by providing an illustration. Described as new in Martinson (1965, as Pseudohyria) without referring to his 1961-record. [details]
Type locality "Kazakhstan, rayon Atabaya" [Atabay region, Kazakhstan] [details]