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Rotalia trochidiformis (Lamarck, 1804)
Description (1–3) from Ferme de l’Orme, Paris Basin and (4) from Bois Gouet (Bretagne), Middle Eocene, Lutetian. (1) Axial section. (2–3) Oblique sections. (4) Section perpendicular to coiling axis; note the development of heavy papillae forming umbilical papillae on the ventral surface of the chambers. Abbreviations: f foramen, up umbilical plate, ump umbilical piles, spc spiral canal, p pores, per periph- ery, foa foliar aperture, fea feathering of interlocular space, fol folia, sf septal flap, isp intraseptal space (From Hottinger, 2014).
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added on 2024-02-18260 viewsForaminifera taxaDigital photo, entire species Rotalia trochidiformis (Lamarck, 1804) †checked Consorti, Lorenzo 2024-02-18
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