Foraminifera taxon details
Praeorbulina Olsson, 1964 †
722195 (urn:lsid:marinespecies.org:taxname:722195)
accepted
Genus
Globigerinoides glomerosa subsp. glomerosa Blow, 1956 † accepted as Praeorbulina glomerosa (Blow, 1956) † (type by original designation)
marine, brackish, fresh, terrestrial
fossil only
feminine
Olsson, R. K. (1964). Praeorbulina Olsson, a new foraminiferal genus. <em>Journal of Paleontology.</em> 4: 770-771.
page(s): p. 770 [details]
page(s): p. 770 [details]
Diagnosis Test spherical, early globular to ovate chambers in a trochospiral coil, chambers enlarging rapidly as added, three to four...
Diagnosis Test spherical, early globular to ovate chambers in a trochospiral coil, chambers enlarging rapidly as added, three to four per whorl, much enlarged final chamber turned to the umbilical side and embracing the early whorls, sutures flush to depressed; wall calcareous, coarsely perforate and appearing coarsely cancellate because of the deep pore pits; primary aperture in early stage is a large semicircular interiomarginal umbilical opening, apertures of the trochospiral chambers covered by the final enveloping chamber that has only small crescentic and slitlike sutural supplementary openings. Upper L. Miocene (U. Langhian) to lower M. Miocene (L. Serravallian); tropical to temperate, cosmopolitan. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2021). World Foraminifera Database. Praeorbulina Olsson, 1964 †. Accessed at: http://www.marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=722195 on 2025-11-10
Date
action
by
original description
Olsson, R. K. (1964). Praeorbulina Olsson, a new foraminiferal genus. <em>Journal of Paleontology.</em> 4: 770-771.
page(s): p. 770 [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]
page(s): p. 770 [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]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Diagnosis Test spherical, early globular to ovate chambers in a trochospiral coil, chambers enlarging rapidly as added, three to four per whorl, much enlarged final chamber turned to the umbilical side and embracing the early whorls, sutures flush to depressed; wall calcareous, coarsely perforate and appearing coarsely cancellate because of the deep pore pits; primary aperture in early stage is a large semicircular interiomarginal umbilical opening, apertures of the trochospiral chambers covered by the final enveloping chamber that has only small crescentic and slitlike sutural supplementary openings. Upper L. Miocene (U. Langhian) to lower M. Miocene (L. Serravallian); tropical to temperate, cosmopolitan. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
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