Foraminifera taxon details
Praeorbitolina Schroeder, 1964 †
739385 (urn:lsid:marinespecies.org:taxname:739385)
accepted
Genus
Praeorbitolina cormyi Schroeder, 1964 † (type by original designation)
Praeorbitolinoides Matsumaru, 2005 † · unaccepted > junior subjective synonym (Subjective junior synonym Opinion...)
Subjective junior synonym Opinion of Cherchi and Schroeder (2009)
marine, brackish, fresh, terrestrial
fossil only
feminine
Schroeder, R. (1964). Communication préalable sur l'origine des Orbitolines. <em>Société Géologique de France, C. R. des séances.</em> 1964: 411-413.
page(s): p. 412 [details]
page(s): p. 412 [details]
Diagnosis Test conical, megalospheric embryonal apparatus consisting of protoconch, deuteroconch, and subembryonal zone, somewhat...
Diagnosis Test conical, megalospheric embryonal apparatus consisting of protoconch, deuteroconch, and subembryonal zone, somewhat eccentric in position and not completely surrounded laterally by the earliest postembryonal chamber, early stage with initial planispire or trochospire, followed by discoidal uniserial chambers subdivided into a narrow marginal zone with intersecting exoskeletal vertical radial beams of two orders and transverse rafters that parallel the chamber floor, a slightly broader radial zone in which the beams have a distinctly triangular cross-section as seen in tangential thin section, and finally a much wider central reticular zone. L. Cretaceous (L. Aptian); Spain; Italy; Afghanistan; Iran. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Praeorbitolina Schroeder, 1964 †. Accessed at: https://www.marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=739385 on 2026-08-17
Date
action
by
original description
Schroeder, R. (1964). Communication préalable sur l'origine des Orbitolines. <em>Société Géologique de France, C. R. des séances.</em> 1964: 411-413.
page(s): p. 412 [details]
original description (of Praeorbitolinoides Matsumaru, 2005 †) Matsumaru, K. (2005). Praeorbitolinoides, a new Orbitolinid foraminiferal genus from the Lower Aptian (Cretaceous) of Hokkaido, Japan. <em>Micropaleontology.</em> 51(1): 93-99., available online at https://doi.org/10.2113/51.1.93
page(s): p. 95 [details]
page(s): p. 412 [details]
original description (of Praeorbitolinoides Matsumaru, 2005 †) Matsumaru, K. (2005). Praeorbitolinoides, a new Orbitolinid foraminiferal genus from the Lower Aptian (Cretaceous) of Hokkaido, Japan. <em>Micropaleontology.</em> 51(1): 93-99., available online at https://doi.org/10.2113/51.1.93
page(s): p. 95 [details]
From editor or global species database
Diagnosis Test conical, megalospheric embryonal apparatus consisting of protoconch, deuteroconch, and subembryonal zone, somewhat eccentric in position and not completely surrounded laterally by the earliest postembryonal chamber, early stage with initial planispire or trochospire, followed by discoidal uniserial chambers subdivided into a narrow marginal zone with intersecting exoskeletal vertical radial beams of two orders and transverse rafters that parallel the chamber floor, a slightly broader radial zone in which the beams have a distinctly triangular cross-section as seen in tangential thin section, and finally a much wider central reticular zone. L. Cretaceous (L. Aptian); Spain; Italy; Afghanistan; Iran. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification) [details]
From editor or global species database
Image from typetaxon
Image from typetaxon