Traits name details
original description
Sowerby, J. De C. (1829). List of fossil shells in the fresh-water formations of Aix and Fuveau, in Provence. In: Murchison, R. I.; Lyell, C., Eds., On the Tertiary Fresh-water Formations of Aix, in Provence, including the coal-field of Fuveau. <em>The Edinburgh New Philosophical Journal.</em> 1829: 297., available online at https://books.google.de/books?id=Ym1QAAAAcAAJ&printsec=frontcover&hl=de&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false page(s): 297, textfig. [details]
additional source
Heer, O. (1861). Recherches sur le climat et la végétation du pays tertiaire. Jean Wurster & Comp., Winterthur, 220 + xxii pp., available online at https://books.google.de/books?id=2qL7UYqPXvkC&printsec=frontcover&hl=de&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false page(s): 124, 125 [details] 
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