original description
Bolli, H. M.; Loeblich, A. R.; Tappan, H. (1957). Planktonic foraminiferal families Hantkeninidae, Orbulinidae, Globorotaliidae and Globotruncanidae. <em>Bulletin United States National Museum.</em> 215: 3-50., available online at http://www.biodiversitylibrary.org/part/70794#/summary
page(s): p. 30 [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
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Diagnosis Test planispirally enrolled or may be slightly asymmetrical but not trochospiral, involute, biumbilicate, early chambers globular and inflated, later chambers radially elongate and terminally bulbous or clavate, peripheral outline strongly lobulate to digitate; aperture a high narrow equatorial arch extending up the apertural face, bordered laterally by wide flanges that narrow upward to form a narrow lip at the upper margin. M. Eocene; Trinidad. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database