CATALOG OF ORIGINAL DESCRIPTIONS: Globigerinoides sacculiferus immatura LeRoy 1939

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.


Higher levels: pf_cat -> G -> Globigerinoides -> Globigerinoides sacculiferus immatura
Other pages this level: << < G. pseudodubia, G. pseudoruber, G. pseudosellii, G. quadrilobatus hystricosus, G. quadrilobatus praeimmaturus, G. quadrilobatus primordius, G. ruber albus, G. ruber parkeri, G. rubra seigliei, G. rubriformis, G. sacculifer brachysacculifer, G. sacculifer minimus, G. sacculifer spinulosus, G. sacculifera subsacculifera, G. sacculiferoides, G. sacculiferus immatura, G. sacculiferus irregularis, G. semiinvoluta, G. semiinvolutus, G. sicanus, G. sicanus praesicanus, G. subconglobatus micra, G. subconglobatus subconglobata, G. subquadrata, G. subquadratus praesubquadratus, G. subquadratus subelongatus, G. suleki, G. tapiesi, G. tenella, G. transitoria, G. triloba altiapertura> >>

Globigerinoides sacculiferus immatura

Citation: Globigerinoides sacculiferus immatura LeRoy 1939
Rank: sub-species
Type locality: Locality Ho- 862A, 2.q. km. N. 30° E. from kampong Loeboekram- bahan, Tapoeng Kiri area, Rokan-Tapanoeli Region (approximately between north latitudes 0° 30' and 1°50' and east longitudes 99°40' and 101°30'), Central Sumatra, Netherlands Indies; auger hole sample , depth 3-1/2 meters.
Type age (chronostrat): Neogene, Miocene (?)
Type sample (& lithostrat): Transitional Zone Sand and Clay Series.
Type specimens: No. P. S. 1077a.
Type repository: Bandung; collections of the Government Geological Museum at Bandoeng, Java;

Linked specimens: USNM-38163

Current identification/main database link: Trilobatus immaturus (LeRoy, 1939)


Original Description
This varietal form comprises the greater part of most assemblages from the Telisa shales. It is either an early or immature form of the type described by Brady from 'a white friable limestone from New Britain' (Geol. Mag., Dec. II, Vol. IV, p. 535, 1877). Brady notes that Globigerinoides sacculiferus is characterized by 'its large out-spread test, of which the terminal chamber or chambers are pouch-shapedor pointed.' The Sumatran form does not exhibit this feature. However , the type form is found in the late Tertiary Marls of East Borneo and East Java and is usually associated with forms identical to the Sumatran variety. The development of the last irregular, fistulose chamber probably results from environmental condit ions or is a stage of higher development.

Size: Height 0.43 mm.

Extra details from original publication
"he best development of this variet =al form is reached within the Telisa. It has also been found in appreciable numbers in the 'Pliocene' of West Java and in dredgings from off the West Java coast at depths not exceeding 30 meters.

References:

LeRoy, L. W. (1939). Some small foraminifera ostracoda and otoliths from the Neogene (Miocene) of the Rokan-Tapanoeli area, central Sumatra,. Natuurk. Tijdschr. Nederl.-Indie. 99(6): 215-296. gs

Spezzaferri, S., Olsson, R. K. & Hemleben, C. (2018c). Taxonomy, biostratigraphy, and phylogeny of Oligocene to Lower Miocene Globigerinoides and Trilobatus. In, Wade, B. S., Olsson, R. K., Pearson, P. N., Huber, B. T. & Berggren, W. A. (eds) Atlas of Oligocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication. 46(Chap 9): 269-306. gs V O

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Globigerinoides sacculiferus immatura compiled by the pforams@mikrotax project team viewed: 28-1-2021

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