CATALOG OF ORIGINAL DESCRIPTIONS: Globorotalia barisanensis 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 -> Globorotalia -> Globorotalia barisanensis
Other pages this level: << < G. anfracta, G. angulata abundocamerata, G. angulata kubanensis, G. angulata praepentacamerata, G. apanthesma, G. apertura, G. aragonensis, G. aragonensis araratica, G. aragonensis caucasica, G. aragonensis incisimarginata, G. aragonensis twisselmanni, G. archeomenardii, G. armenica, G. australiformis, G. avanensis, G. barisanensis, G. bella, G. berggreni, G. bermudezi, G. berwaliana, G. birnageae, G. bollii, G. bonairensis, G. bononiensis, G. bouregregensis, G. broedermanni lodoensis, G. bullbrooki, G. bykovae, G. bykovae minoritesta, G. californica, G. californica Smith> >>

Globorotalia barisanensis

Citation: Globorotalia barisanensis LeRoy 1939
Rank: Species
Type locality: Locality Ho-862A, 2.4 km. N. 30° E. from kampong Loeboekrambahan, 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 (?), Transitional Zone Sand and Clay Series.
Type specimens: Pl. 1, figs. 8-10, holotype, X 65.: No. P. S. 1081 a.
Type repository: Bandung; Government Geological Museum at Bandoeng, Java;

Linked specimens: USNM-38164

Current identification/main database link: Globorotalia fohsi Cushman & Ellisor, 1939

See also: Globorotalia fohsi ;


Original Description

"This Sumatran form appears to be a new species. It is typified by being somewhat biconvex with subrounded, lobulated periphery; chambers slightly oblique and increasing only slightly in size as added with exception of last chamber which is usually the largest, five to six in last-formed whorl; sutures ventrally depressed, slightly curved to straight and more or less radial, dorsally rather strongly curved, slightly depressed; wall smooth, finely perforate; aperture opens ventrally and is covered by a distinct lip. Diameter 0.40 mm.; thickness 0.15 mm.


Size: Diameter 0.40 mm.; thickness 0.15 mm.

Extra details from original publication

"This form is frequently found in the late Tertiary deposits of the East Indian Region. In Sumatra it is common in the Transitional Zone and is sometimes associated with Globorotalia aff. canariensis (d'Orbignyl.

"This species appears related to Globorotalia quadraria Cushman described from the Miocene of Louisiana which differs from the Sumatran form by the chambers increasing in size more rapidly as added."


TYPE LEVEL : Neogene , Miocene (? l, Transitional Zone Sand and Clay Series. 


Editors' Notes
The name barisanensis was widely applied to fohsellids with a rounded periphery (e.g. as Globorotalia fohsi barisanensis), until Blow & Banner (1966) re-examined the holotype and showed that it was a junior synonym of G. fohsi Cushman & Ellisor 1939. This opinion has been questioned by Zachariasse et al. 2017.  

References:

Blow, W. H. & Banner, F. T. (1966). The morphology, taxonomy and biostratigraphy of Globorotalia barisanensis LeRoy, Globorotalia fohsi Cushman and Ellisor, and related taxa. Micropaleontology. 12(3): 286-302. gs

Cushman, J. A. & Ellisor, A. C. (1939). New species of foraminifera from the Oligocene and Miocene. Contributions from the Cushman Laboratory for Foraminiferal Research. 15: 1-14. gs V O

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

Zachariasse, W. J., Berggren, W. A., Si, W. & Huber, B. T. (2017). On the taxonomic identity of the planktonic foraminiferal species Globorotalia barisanensis Le Roy, 1939. Journal of Foraminiferal Research. 47: 389-398. gs


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Globorotalia barisanensis compiled by the pforams@mikrotax project team viewed: 27-11-2020

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Comments (1)

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François

In: Zachariasse, W.J., Berggren, W.A., Si, W., Huber, B.T. (2017). On the taxonomic identity of the planktonic foraminiferal species Globorotalia barisanensis Le Roy, 1939. The Journal of Foraminiferal Research. 47: 389-398.

The synonymy of G. barisanensis with G. fohsi is contested: "G. barisanensis appears to be a valid name and a senior synonym of G. peripheroacuta. However, we recommend that it will be more practical to conserve the latter name, which is well established in the literature."

François

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Jeremy Young (Tonbridge, UK)

thanks for pointing that out, I've added a note on this - and it will need to addressed by the Neogene working group. Jeremy

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