Catalog - Globorotalia planoconica Catalog - Globorotalia planoconica

CATALOG OF ORIGINAL DESCRIPTIONS: Globorotalia planoconica Subbotina 1953

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 planoconica
Other pages this level: << < G. opima nana, G. opima opima, G. orientalis, G. oscitans, G. palmerae, G. paniae, G. pentacamerata, G. perclara, G. perconigi, G. perforataminuta, G. pertenuis, G. petaliformis, G. planocompressa, G. planocompressa evoluta, G. planocompressa planocompressa, G. planoconica, G. planoconvexa, G. platispira, G. pliozea, G. praemargaritae, G. praemenardii, G. praemiocenica, G. praenartanensis, G. praepseudomenardii, G. pseudochapmani, G. pseudocrassa, G. pseudomayeri, G. pseudomenardii, G. pseudomiocenica, G. pseudopachyderma, G. pseudoscitula> >>

Globorotalia planoconica

Citation: Globorotalia planoconica Subbotina 1953
taxonomic rank: Species
Type specimens: 4081
Type locality: Caucasus, Kheu River, ser. F1, Zone of conical globorotaliids, lower to middle Eocene (probably upper Paleocene)
Type repository: St. Petersburg, Russia; VNIGRI

Current identification/main database link: Globanomalina planoconica (Subbotina 1953)

Original Description

"Shell oval, planoconvex, with flattened dorsal and convex ventral sides. Whorls, 2. The first whorl is poorly distinguished because of its very small size. The second whorl is obvious and consists of 5 or 6 chambers which gradually increase in size. The last chamber is considerably larger than the penultimate one. The peripheral margin is scalloped, acute, and sometimes possesses a narrow keel. On the dorsal side the chambers have a semicircular outline, on the ventral side it is triangular. The umbilical ends of the chambers are closely joined together so that there is an open and deep umbilicus. The septal sutures are slightly curved and recessed. The orifice is furnished with a slender and narrow lip. In some specimens the orifice appears to extend along the whole of the marginal suture from the umbilicus to the periperal margin and may even extend on to the peripheral margin itself. The wall is thin, smooth, transparent and perforated by fine pores. Dimensions: 0.23-0.26 mm, thickness 0.06-0.08 mm."


Olsson, R. K., Hemleben, C., Berggren, W. A. & Huber, B. T. (1999). Atlas of Paleocene Planktonic Foraminifera. Smithsonian Institution Press, Washington, DC. 1-252. gs

Pearson, P. N. & Berggren, W. A. (2006). Taxonomy, biostratigraphy, and phylogeny of Morozovelloides n. gen. In, Pearson, P. N., Olsson, R. K., Hemleben, C., Huber, B. T. & Berggren, W. A. (eds) Atlas of Eocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication . 41(Chap 10): 327-342. gs O

Subbotina, N. N. (1953). Foraminiferes fossiles d'URSS Globigerinidae, Globorotaliidae, Hantkeninidae. Bureau de Recherches Geologiques et Minieres. 2239: 1-144. gs


Globorotalia planoconica compiled by the pforams@mikrotax project team viewed: 2-3-2024

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