Catalog - Orbulina quadrilobata incrusta Catalog - Orbulina quadrilobata incrusta

CATALOG OF ORIGINAL DESCRIPTIONS: Orbulina quadrilobata subsp. incrusta 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 -> Orbulina -> Orbulina quadrilobata incrusta
Other pages this level: O. bituminosa, O. circularosuturalis, O. cornwallisi, O. foveolata, O. foveolata maculata , O. gemina, O. granulata, O. granulata areolata, O. granulata atra, O. granulata impressa, O. hirta, O. imperfecta, O. nitida, O. parva, O. petraea, O. quadrilobata alpha, O. quadrilobata incrusta, O. suturalis, O. trisphaerica, O. tuberculata, O. universa, O. universa aculeata, O. universa alpha, O. universa beta, O. universa bisphaerica, O. universa fulvoviolacea, O. universa parkerae, O. universa spinescens

Orbulina quadrilobata incrusta

Citation: Orbulina quadrilobata subsp. incrusta Fordham 1986
Taxonomic rank: sub-species
Type specimens: UQF 71872.
Type age (chronostrat): O. suturalis zone; lower-middle Miocene.
Type locality: DSDP 208-21-3 73-75 cm.
Type repository: Brisbane, Australia; U Queensland Univ.

Current identification:


Original Description

Moderate in size, robust; low dextral trochospire, tight parallel and perpendicular to axis. Equatorial outline weakly trilobate; lateral outline oval. Chambers globular, weakly appressed, at least 7 in total, 3 in final whorl; increase moderate. Dorsal view: chambers slightly longer concentrically, barely inflated; sutures barely depressed; intercameral sutures radial. Ventral view: chambers inflated; intercameral sutures radial, meeting at closed umbilicus; aperture umbilical, almost closed. Lateral view: smoothly rounded. Wall cancellate on dorsal side of final chamber, covered-in elsewhere.

Size:
Length, 325 µm; width 270 µm; height, 220 µm.

Etymology:
Latin, incrusto, -atus, cover with a coating of some substance.

Extra details from original publication
Description based on: Common material.
Holotype fig.: Fordham 1986 Pl. 11, fig. 5.

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. (6): 1-224. gs


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Orbulina quadrilobata incrusta compiled by the pforams@mikrotax project team viewed: 7-2-2025

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