Bivalvia - Trigoniida - Trigoniidae
Alternative spelling: Primatrigonia
Synonyms: Modesticoncha Hautmann 2009 [objective synonym], Trigonia (Modestella) Hautmann 2001 [objective synonym], Trigonia (Modesticoncha) Hautmann 2009 [objective synonym]
Parent taxon: Trigonia according to E. B. Paevskaya et al. 2001
See also EchevarrÃa et al. 2018, Fang et al. 2009, Hautmann 2001 and Kiessling 2009
Sister taxa: Trigonia (Clavitrigonia), Trigonia (Heslingtonia), Trigonia (Indotrigonia), Trigonia (Kumatrigonia), Trigonia (Pleurotrigonia), Trigonia (Prosogyrotrigonia), Trigonia (Protrigonia), Trigonia (Trigonia), Trigonia aequicostata, Trigonia analoga, Trigonia antiqua, Trigonia azzarolae, Trigonia bowersiana, Trigonia castani, Trigonia castrovillensis, Trigonia charlottensis, Trigonia columbiana, Trigonia coqueiroensis, Trigonia cragini, Trigonia depauperata, Trigonia devexa, Trigonia doroschini, Trigonia eufaulensis gabbi, Trigonia eufaulensis moorei, Trigonia evansi, Trigonia gibboniana, Trigonia guildi, Trigonia hemisphaerica, Trigonia imbricata, Trigonia intersitans, Trigonia kayana, Trigonia kefersteini, Trigonia kitchini, Trigonia maastrichtiana, Trigonia maloneana, Trigonia marginata, Trigonia mearnsi, Trigonia melhasei, Trigonia montanaensis, Trigonia mooreana, Trigonia neuquensis, Trigonia nodulosa, Trigonia obliqua, Trigonia oregona, Trigonia orientalis, Trigonia oviedensis, Trigonia pandicosta, Trigonia papuana, Trigonia picteti, Trigonia plana, Trigonia plumasensis, Trigonia pseudocaudata, Trigonia pseudocrenulata, Trigonia pullus, Trigonia rebouli, Trigonia reesidei, Trigonia resoluta, Trigonia reticulata, Trigonia saavedra, Trigonia somaliensis, Trigonia stantoni, Trigonia stolleyi, Trigonia suborbicularis, Trigonia sulcata, Trigonia tabacoensis, Trigonia taffi, Trigonia thierachensis, Trigonia undulatocostata, Trigonia weaveri, Trigonia whateleyae, Trigonia windhauseniana
Subtaxa: Trigonia (Primatrigonia) zlambachiensis
Type: Trigonia zlambachensis
Distribution:
• Triassic of Austria (1 collection), Iran (12), Tajikistan (1), Vietnam (1)
Total: 15 collections each including a single occurrence