CATALOG OF ORIGINAL DESCRIPTIONS: Globorotalia conomiozea mons Hornibrook 1982

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 conomiozea mons
Other pages this level: << < G. capdevilensis, G. cavernula, G. caylaensis, G. centralis, G. cerroazulensis cunialensis, G. cerroazulensis pomeroli, G. cerroazulensis possagnoensis, G. challengeri, G. chapmani, G. cibaoensis, G. cocoaensis, G. collactea, G. conica, G. conicotruncata, G. conomiozea, G. conomiozea mons, G. convexa, G. crassacarina, G. crassaconica, G. crassacrotonensis, G. crassaformis ronda, G. crassata aequa, G. crassula, G. crater, G. crosswicksensis, G. crotonensis, G. crozetensis, G. crystalriverensis, G. cushmani, G. dalii, G. decorata, > >>

Globorotalia conomiozea mons

Citation: Globorotalia conomiozea mons Hornibrook 1982
Rank: sub-species
Type locality: DSDP Site 284, core 15-6-20, basal Pliocene.
Type age: Basal Pliocene
Holotype Repository: Lower Hutt; NZGS
Type & figured specimens: Holotype and 8 paratypes, NZGS Reg. TF1598.

Current identification/main database link: Globoconella terminalis (Wei 1987)


Original Description
Test markedly plano-conical, moderately hispid, with a distinct peripheral keel, chambers strongly embracing, usually 4 in final whorl, chambers on ventral side elongated to f9rm a prominent angular peak, tightly coiled with umbilicus usually reduced or absent, aperture typically a low elongate,slit with a distinct lip, ventral sutures gently recurved. Dominant coiling direction can be either sinistral or dextral.

Extra details from original publication
Synonyms:

Remarks: Between core 16-2 and 15-6 there is a distinct change in populations of the conical group of Globorotalia from the typical G. conomiozea form to a more tightly coiled test with more embracing and an associated increase in the height of the chambers resulting in a markedly conical cross section. The tightly coiling habit results in a reduced umbilicus and more slit-like aperature than in typical conomiozea. Populations in core 15 and most of core 14 are predominantly sinistrally coiled. They coil randomly in the lower part of core 13, then dominantly dextrally in its upper part. This distinctive subspecies occurs in the East Coast Basin, North Island, being present in the Mangapoike River section where it has a short range, coiling randomly in the upper part of the range-zone of G. pliozea n. sp., and in the lower part of the range-zones of G. puncticulata s.s., and G. crassaformis (unkeeled).

References:

Hornibrook, N. d. B. (1982). Late Miocene to Pleistocene Globorotalia (Foraminiferida) from Deep Sea Drilling Project Leg 29, Site 284, Southwest Pacific. New Zealand Journal of Geology and Geophysics. 25: 83-99. gs


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Globorotalia conomiozea mons compiled by the pforams@mikrotax project team viewed: 28-3-2020

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