Catalog - Obandyella ventriosa astricticamerata

CATALOG OF ORIGINAL DESCRIPTIONS: Obandyella ventriosa subsp. astricticamerata 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 -> O -> Obandyella -> Obandyella ventriosa astricticamerata
Other pages this level: O. ventriosa astricticamerata, O. ventriosa evexa

Obandyella ventriosa astricticamerata

Citation: Obandyella ventriosa subsp. astricticamerata Fordham 1986
Rank: sub-species
Type locality: DSDP 208-14-4 74-76 cm.
Type age (chronostrat): Globigerina nepenthes zone; Upper Miocene.
Type specimens: UQF 72442.
Type repository: Brisbane, Australia; U Queensland Univ.

Current identification:


Original Description
Moderate in size, robust; low sinistral trochospire, very tight. Equatorial outline oval, barely lobate; lateral outline biconvex. Chambers rhomboid, extremely appressed, at least 13 in total, 6 in final whorl, 5 in second-last whorl; increase slow, regular. Dorsal view: chambers nearly circular, slightly longer concentrically, flat; sutures flush; spiral sutures limbate to second-last chamber; intercameral sutures nonlimbate, directed and smoothly curved posteriorly. Ventral view: chambers weakly inflated; sutures slightly depressed, curved posteriorly, meet at closed umbilicus; aperture umbilical--extraumbilical, interiomarginal, low, slit-like, with thick lip. Lateral view: dorsoperipheral shoulder compressed, rounded; dorsal and ventral surfaces of final chamber rounded; earlier chambers keeled. Wall smooth, densely and finely perforate; pustules near aperture.

Size: Length, 275 µm; width, 235 µm; height, 140 µm.

Etymology: Latin, astrictus, tight; camera, chamber; -atus, provided with.

Extra details from original publication
Description based on: Common material.
Holotype fig.: Fordham 1986 Pl. 21, fig. 26.

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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Obandyella ventriosa astricticamerata compiled by the pforams@mikrotax project team viewed: 24-9-2021

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