You are not currently logged in.
Access JSTOR through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
The Foraminiferal Genus Astrononion Cushman and Edwards
N. de B. Hornibrook
Vol. 10, No. 3 (Jul., 1964), pp. 333-338
Published by: The Micropaleontology Project., Inc.
Stable URL: http://www.jstor.org/stable/1484580
Page Count: 6
You can always find the topics here!Topics: Umbilicus, Species, Illustrative plates, Writers, Perforated plates, Specimens, Hyalin, New subgenus, License plates, Natural history museums
Were these topics helpful?See somethings inaccurate? Let us know!
Select the topics that are inaccurate.
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
A neotype from Las Palmas is selected for Astrononion stelligerum (d'Orbigny). External sutural plates in this and some other species of Astrononion are shown to have developed from sutural tubes; consequently, the genus Pacinonion Vella, erected for species with sutural tubes, is considered a junior synonym of Astrononion. Three subgenera of Astrononion are proposed: Astrononion (umbilicate, with sutural tubes sometimes modified as plates; type: Nonionina stelligera d'Orbigny); Laminononion, new subgenus (non-umbilicate with rhomboidal or triangular plates covering the umbilicus; type: Astrononion tumidum Cushman and Edwards); and Fijinonion, new subgenus (umbilicate with broad, fused apertural plates; type: Astrononion fijiensis Cushman and Edwards).
Micropaleontology © 1964 The Micropaleontology Project., Inc.