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WoRMS taxon details
original description
Ehrenberg, C.G. (1843). Verbreitung und Einfluss des mikroskopischen Lebens in Süd-und Nord-Amerika. <em>Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin.</em> 1841: 291-445, 4 pls., available online at https://biodiversitylibrary.org/page/29106994
page(s): p. 402 [details]
original description
(of Arspirillinum Rhumbler, 1913 †) Rhumbler, L. (1913). Die Foraminiferen (Talamophoren) der Plankton-Expedition. Zugleich Entwurf eines natürlichen Systems der Foraminiferen auf Grund selektionistischer und mechanisch-physiologischer Faktoren. Zweiter Teil : Systematik. <em>Ergebnisse der Plankton-Expedition der Humboldt-Stiftung.</em> Bd.3 L.c.: 332-476., available online at https://www.biodiversitylibrary.org/page/2124278 [details]
context source (MSBIAS)
MEDIN. (2011). UK checklist of marine species derived from the applications Marine Recorder and UNICORN. version 1.0. [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
Muller, Y. (2004). Faune et flore du littoral du Nord, du Pas-de-Calais et de la Belgique: inventaire. [Coastal fauna and flora of the Nord, Pas-de-Calais and Belgium: inventory]. <em>Commission Régionale de Biologie Région Nord Pas-de-Calais: France.</em> 307 pp., available online at http://www.vliz.be/imisdocs/publications/145561.pdf [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  [request]
From editor or global species database
Diagnosis Test discoidal, globular proloculus followed by a gradually enlarging enrolled, undivided tubular second chamber, earliest few whorls may be in a low trochospiral, later ones planispiral, commonly four to nine closely appressed whorls, tubular chamber may not be entirely cylindrical but lies against the periphery of the preceding whorl, and final part of the last whorl may bend at a right angle so that the aperture opens into the umbilical depression, asexually formed gamont with smaller test and smaller proloculus than those of sexually produced agamont; wall calcareous, hyaline, appearing optically as a single calcite crystal with c-axis oriented perpendicular to the plane of coiling or less commonly parallel to this plane, others may have a transitional orientation with c-axis at first perpendicular to the coiling axis and becoming progressively oblique to this in successive whorls, or may have a helicoidal structure, with c-axes at an angle of about 45¡ to the radii from the center of the test, or may consist of a mosaic of crystals in which the c-axes are variously oriented, the calcite being deposited over an organic membrane; surface commonly with numerous pores or pseudopores of limited distribution; aperture rounded to crescentic, at the open end of the tubular chamber; gamont individuals uninucleate, agamont multinucleate, asexual multiple fission occurs within a reproductive cyst formed by the animal, during sexual reproduction two or three individuals are enclosed within a fertilization cyst, the syzygy ensuring gametic fusion. U. Triassic (Rhaetian) to Holocene; cosmopolitan. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]Unreviewed
Habitat Known from seamounts and knolls [details]
From editor or global species database
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