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MarBEF Data System |
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WoRMS taxon details
original description
Orbigny, A. D. d'. (1826). Tableau méthodique de la classe des Céphalopodes. <em>Annales des Sciences Naturelles.</em> vol. 7: 96-169, 245-314., available online at http://biodiversitylibrary.org/page/5753959
page(s): p. 280 [details]
original description
(of Asterodiscus Ehrenberg, 1839) Ehrenberg, C.G. (1839). Über die Bildung der Kreidefelsen und des Kreidemergels durch unsichtbare Organismen. <em>Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin, Physikalische Klasse.</em> 1838: 59-147, pls. 1-4., available online at https://www.biodiversitylibrary.org/page/29017435
page(s): Chart opp. p. 120, p. 130 [details] 
original description
(of Cibicidella Cushman, 1927) Cushman, J. A. (1927). An outline of a reclassification of the foraminifera. <em>Contributions from the Cushman laboratory for foraminiferal research.</em> 3(1): 1-105., available online at https://cushmanfoundation.allenpress.com/Portals/_default/files/pubarchive/cclfr/3cclfr1.pdf
page(s): p. 93 [details] Available for editors  [request]
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 [request]
 Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Diagnosis Test discoidal, early stage in low trochospiral coil of random coiling direction, attached to the substrate by the spiral side, microspheric proloculus 11µm to 14 µm in diameter, megalospheric one 23 µm to 56 µm in diameter, later chambers have two apertures and each gives rise to new biapertural chambers, producing numerous spirals and eventually whorls of chambers, sutures distinct, may be thickened and elevated on the attached side, commonly depressed on the free side, periphery rounded to subangular; wall calcareous, optically radial, coarsely perforate, organic membrane giving a brownish color to the early spire and pierced only by the apertures, not by the wall perforations; aperture in early coil single, arched, and interiomarginal on the periphery, each later chamber with two apertures on the periphery at opposite ends of the chamber, each opening bordered by a narrow lip, smaller supplementary openings for the extrusion of pseudopodia may occur on both sides of the test; vegetative cytoplasm greenish-brown to salmon-rose in color but pigments eliminated at reproduction, pseudopodia rectilinear, about equal to test diameter in length, anastomosing slightly and showing slow circulation of granules; much of parent test dissolved during schizogony, 60 to 100 embryos with only an organic test layer being produced in a temporary agglutinated reproductive cyst, calcification commences at about the five-chamber stage and is followed by escape from the cyst; sexual reproduction involves many nuclear divisions and utilization of all parent cytoplasm to produce numerous inequally biflagellate gametes that are released from the parent test at night. Eocene to Holocene; cosmopolitan. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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