Foraminifera taxon details

Rabanitina basraensis Smout, 1956 †

896470  (urn:lsid:marinespecies.org:taxname:896470)

accepted
Species
marine, brackish, fresh, terrestrial
fossil only
Smout, A. H. (1956). Three new Cretaceous genera of foraminifera related to the Ceratobuliminidae. <em>Micropaleontology.</em> 2(4): 335-345.
page(s): p. 344, pl. 1, fig. 32; pl. 2, figs 7-22; text-fig. 2. [details]  Available for editors  PDF available [request] 
Description There is a slight asymmetry between the two poles. The aperture is a single or double row of pores on the terminal face....  
Description There is a slight asymmetry between the two poles. The aperture is a single or double row of pores on the terminal face. Inside each chamber there is a plate, roughly parallel to the roof of the chamber, and this has two or three rows of large holes, at the margins of which buttresses run to the roof and floor of the chamber. the plate increases in size and complexity so that the later nepionic chambers have the same internal structure as the ephebic ones. The evolute dorsal surface is hidden by the involute ephebic chambers. Proloculus spherical and succeeded directly by a normal chamber. No dimorphism. [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2024). World Foraminifera Database. Rabanitina basraensis Smout, 1956 †. Accessed at: https://marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=896470 on 2024-04-23
Date
action
by
2016-12-23 07:02:07Z
created

original description Smout, A. H. (1956). Three new Cretaceous genera of foraminifera related to the Ceratobuliminidae. <em>Micropaleontology.</em> 2(4): 335-345.
page(s): p. 344, pl. 1, fig. 32; pl. 2, figs 7-22; text-fig. 2. [details]  Available for editors  PDF available [request] 

basis of record Ellis, B. F.; Messina, A. (1940-2015). Catalogue of Foraminifera. <em>Micropaleontology Press, American Museum of Natural History, New York.</em>  [details]   

additional source Whittaker, J. E.; Jones, R. W.; Banner, F. T. (1998). Key Mesozoic Benthic Foraminifera of the Middle East. <em>The Natural History Museum of London.</em> 1-236. [details]   
From editor or global species database
Description There is a slight asymmetry between the two poles. The aperture is a single or double row of pores on the terminal face. Inside each chamber there is a plate, roughly parallel to the roof of the chamber, and this has two or three rows of large holes, at the margins of which buttresses run to the roof and floor of the chamber. the plate increases in size and complexity so that the later nepionic chambers have the same internal structure as the ephebic ones. The evolute dorsal surface is hidden by the involute ephebic chambers. Proloculus spherical and succeeded directly by a normal chamber. No dimorphism. [details]

Dimensions Equatorial diameter 0.8 mm. to 2.1 mm. Axial length 0.7 mm. to 1.6 mm. Diameter of nucleoconch 0.09 mm. to 0.15 mm. There are about two and one-half nepionic whorls and about three ephebic ones, with nine chambers in the first whorl, twelve in the second, and about sixteen in each of the succeeding whorls. [details]