Foraminifera taxon details
original description
Schlumberger, C. (1893). Note sur les genres <i>Trillina</i> et <i>Linderina</i>. <em>Bulletin de la Société géologique de France.</em> (3) 21 (2): 118-123. page(s): p. 120 [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 large, up to 3.5 mm in diameter, discoidal, centrally thickened, early chambers of microspheric test in an irregular cluster, rather than in a distinct spire, megalospheric test with bilocular embryo followed by a nepionic ring of seven to eight small chambers, later with concentric series of small arched chambers in a single equatorial layer, those of successive series progressively larger and alternating in position, early stage covered by numerous layers of calcite, resulting in an inflated central region that may be traversed by fine pores connecting the chambers to the exterior, periphery rounded, peripheral outline lobulate; wall calcareous, surface with small pustules; apertures and intercameral openings at the base of the chamber against the chambers of the preceding cycle. M. Eocene (Lutetian) to U. Eocene; France; Spain; Romania; Turkey; Somalia; North America; Indonesia. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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