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Deep-Sea taxon details
original description
Schlumberger, C. (1887). Note sur le genre Planispirina. <em>Bulletin de la Société Zoologique de France.</em> 12:475-488., available online at http://biostor.org/reference/103332
page(s): p. 488 [details] 
basis of record
Gross, O. (2001). Foraminifera, <B><I>in</I></B>: Costello, M.J. <i>et al.</i> (Ed.) (2001). <i>European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels,</i> 50: pp. 60-75 (look up in IMIS) [details]
additional source
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 
 Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Diagnosis Test ovate in outline, biconvex but asymmetrical, chambers one-half coil in length, at first added about 120¡ apart but the angle gradually increasing so that the chamber arrangement shows a sigmoid curve as seen in section, chambers with broad lateral extensions that overlap the earlier part of the test, resulting in a much thickened wall in the central area and a biloculine appearance from the exterior; wall calcareous, thick, imperforate, porcelaneous; aperture terminal, rounded, with a small tooth. Eocene?, L. Miocene (Burdigalian) to Holocene; cosmopolitan. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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