original description
Schultze, M. J. S. (1854). Über den Organismus der Polythalamien (Foraminiferen), nebst Bemerkungen über die Rhizopoden im allgemeinen. <em>Ingelmann, Leipzig.</em> 1-68., available online at https://books.google.pt/books?id=o7rk00_xueQC [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 [request]
From editor or global species database
Diagnosis Test free or attached, proloculus followed by undivided planispiral to streptospiral tubular second chamber that may show later zigzag growth. L. Carboniferous (Visean) to Holocene. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]