Catalog - Neoacarinina conglomerata ventriosa

CATALOG OF ORIGINAL DESCRIPTIONS: Neoacarinina conglomerata subsp. ventriosa Fordham 1986

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 -> N -> Neoacarinina -> Neoacarinina conglomerata ventriosa
Other pages this level: N. blowi, N. conglomerata ventriosa

Neoacarinina conglomerata ventriosa

Citation: Neoacarinina conglomerata subsp. ventriosa Fordham 1986
Rank: sub-species
Type specimens: UQF 71480.
Type age (chronostrat): Globorotalia plesiotumida zone; Upper Miocene.
Type locality: DSDP 77B-13-4 6-8 cm.
Type repository: Brisbane, Australia; U Queensland Univ.

Current identification:


Original Description

Very large, robust; moderately elevated sinistral trochospire, tight parallel and perpendicular to axis. Equatorial outline weakly quadrilobate; lateral outline highly umbilicoconvex. Chambers ovate parallel to axis, extremely closed appressed, over 11 (18?) in total, 4 in final whorl, 5! in second-last whorl; increase rapid until third-last chamber when decreases. Dorsal view: chambers distinctly elongated concentrically, weakly elevated proximally; sutures weakly depressed; intercameral sutures radial in final whorl, increasingly directed and curved posteriorly to earlier chambers; chambers broadest posteriorly giving a tangential lobation. Ventral view: chambers vaulted very close to umbilicus; intercameral sutures radial to curved, very deeply incised, adjacent pairs (final--second-last and second-Iast--third-last; third-Iast--fourth-last and fourth-last--finaI) meet at opposite ends of broad umbilical gap which is moderately wide; aperture obscured, umbilical. Lateral view: dorsoperipheral shoulder and ventral face smoothly rounded; umbilical shoulder recurved very close to umbilicus; apertural face reclined. Wall cancellate with large dense pores.

Size:
Length, 385 µm; width, 405 µm; height, 410 µm

Etymology:
Latin, ventriosus, pot-bellied, bulging.

Extra details from original publication
Description based on: Common material.
Holotype fig.: Fordham 1986 Pl. 6, fig. 13.

Editors' Notes

References:

Fordham, B. G. (1986). Miocene-Pleistocene planktic foraminifers from D.S.D.P. Sites 208 and 77, and phylogeny and classification of Cenozoic species. Queensland, Australia. 1-224. gs


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Neoacarinina conglomerata ventriosa compiled by the pforams@mikrotax project team viewed: 4-12-2022

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