Catalog - Tenuitellinata Catalog - Tenuitellinata


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 -> T -> Tenuitellinata
Other pages this level: Tectoglobigerina, Tenuitella, Tenuitellinata, Tenuitellita, Tesseraella, Texasina, Textilaria, Textularia, Thalmanninella, Ticinella, Tinophodella, Toddella, Trilobatus, Trilobigerina, Trinitella, Trochoguembelitria, Truncatulina, Truncorotalia, Truncorotaloides, Tubitextularia, Turbeogloborotalia, Turborotalia, Turborotalia (Acarinina), Turborotalia (Turborotalia), Turborotalita

Tenuitellinata selleyi Li, Radford,&Banner 1992


Citation: Tenuitellinata Li 1987
taxonomic rank: Genus
Type species: Globigerina angustiumbilicata Bolli, 1957.

Current identification/main database link: Tenuitella Fleisher, 1974, emended Li, 1987

Original Description

Test small, low to medium trochospiral, with convex spiral side; chambers globular to subglobular, about 11-13 slowly enlarging chambers arranged in 2 whorls, 4-5 chambers in final whorl; sutures radial on umbilical (involute) side, radial to slightly curved on spiral (evolute) side; umbilicus small to closed; wall microperforate and pustulate; aperture a low arch, intra umbilical, bordered with a thin lip, but lacking a bulla. Stratigraphic range. Eocene?-Oligocene to Holocene.

Extra details from original publication
Remarks - Tenuitellinata is superficially similar to Tenuitella, but differs in apertural details. In Tenuitella, the aperture is always umbilical-extraumbilical (-peripheral), but species of Tenuitellinata possess an intraumbilical aperture. Tenuitellinata may have evolved from Tenuitella by migration of the aperture to the umbilicus; hence they are phylogenetically closely related. Separation of this new genus from Tenuitella is to mark an evolutionary stage, which may then have evolved into bullate Globigerinita.

Stratigraphic range - Eocene?-Oligocene to Holocene.

Included species


Li, Q. (1987). Origin, phylogenetic development and systematic taxonomy of the Tenuitella plexus (Globigerinitidae, Globigerininina). Journal of Foraminiferal Research. 17: 298-320. gs


Tenuitellinata compiled by the pforams@mikrotax project team viewed: 15-6-2024

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