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Spiroloculina aspera Terquem & Berthelin, 1875
Description Terquem, O. & Berthelin, G. (1875). Étude microscopique des marnes du Lias moyen d'Essey-lès-Nancy, zone inférieure de l'assise à Ammonites margaritatus. Mémoires de la Société Géologique de France (2e série). 10(3): 1-126, 10 pls. (pls. 11-20)., available online at https://www.biodiversitylibrary.org/page/46320286page(s): p. 83, pl. 7, figs 6a-c. PNG file - 211.32 kB - 746 x 360 pixels added on 2025-06-2712 viewsForaminifera taxa Spiroloculina aspera Terquem & Berthelin, 1875 † accepted as Extonia aspera (Terquem & Berthelin, 1875) †checked Le Coze, François 2025-06-27
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