original description
Morgan J. de. (1920). Contribution à l'étude de la faune des Faluns de la Touraine. <em>Bulletin de la Société Géologique de France.</em> ser. 4, 19: 305-347., available online at https://www.biodiversitylibrary.org/page/31125406
page(s): 333-334, textfig. 29 [details]
new combination reference
Schlickum, W. R. (1968). Die Gattungen <em>Briardia</em> Munier-Chalmas und <em>Nystia</em> Tournouer. <em>Archiv für Molluskenkunde.</em> 98: 39-51.
page(s): 42 [details] Available for editors [request]
From editor or global species database
Type locality Pontlevoy ("Pont-Levoy, vallon de Charenton"), Loir-et-Cher, France; late Burdigalian to early Langhian (mammal zone MN 5), early to middle Miocene [details]