Foraminifera taxon details
original description
Aurouze, G.; Boulanger, D. (1954). Ganella n. gen., nouveau genre de foraminifères de l'Yprésien de Gan (Basses-Pyrénées). <em>Compte rendu des Séances, Société Géologique de France.</em> 1954: 186-188. page(s): p. 187 [details]
basis of record
Loeblich, A. R.; Tappan, H. (1987). Foraminiferal Genera and their Classification. Van Nostrand Reinhold Company, New York. 970pp., available online at https://books.google.pt/books?id=n_BqCQAAQBAJ [details] Available for editors [request]
From editor or global species database
Diagnosis Test lenticular, low trochospiral coil in the early stage, becoming nearly planispiral but asymmetrical in the adult, bievolute, five or six gradually enlarging chambers per whorl, sutures strongly curved backward to the periphery, those of the earlier stage limbate and elevated, final one or two depressed, periphery_ carinate; wall calcareous, optically granular, perforate except for the non perforate beaded and elevated sutures and peripheral keel, surface smooth or with a few low pustules or rugae; aperture an elongate vertical slit in the oblique and flattened apertural face, in the early stage interiomarginal, later progressively higher in the apertural face and bordered with an elevated rim. L. Eocene (Ypresian) to M. Eocene (Lutetian); France. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
| |