found in the North Atlantic
unknown
none
Geological Time: Quaternary Holocene recent
the drawings are published in the book cited below, author and collection:
View of a specimen of Melonis umbilicatulus (Walker & Jacob, 1798)
The identification is based upon:
Cushman, J., A., 1930: The Foraminifera of the Atlantic Ocean. Part 7. Nonionidae, Camerinidae, Peneroplidae and Alveolinellidae. Smithsonian Institution United States National Museum Bulletin 104. Plate 1, Fig. 1