Foraminifera taxon details
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. 21; note: As Planomalininae = subfamily. [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 [request]
From editor or global species database
Diagnosis Test planispiral but may tend to become trochospiral; aperture equatorial and interiomarginal with bordering lip, those of earlier chambers may partly remain open as relict apertures after new chambers are added. L. Cretaceous (Barremian) to U. Cretaceous (Maastrich tian). (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
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