CATALOG OF ORIGINAL DESCRIPTIONS: Globorotalia miozea subsp. acumarginata Fordham 1986
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Original Description Moderate in size, fairly robust; low dextral trochospire, very tight. Equatorial outline circular, weakly lobate; lateral outline biconvex, slightly higher umbilically. Chambers angular-rhomboid, strongly appressed, about 14 in total, 5 in final whorl; increase moderate. Dorsal view: chambers longer concentrically, flat; sutures flush, nonlimbate or very weakly limbate; intercameral sutures directed and smoothly curved posteriorly. Ventral view: chambers weakly inflated; intercameral sutures radial tending to curve posteriorly at distal end, moderately depressed, meeting at tight umbilicus; aperture umbilical--extraumbilical, interiomarginal, very low, slit-like, with thick lip. Lateral view: dorsoperipheral shoulder sharply angular; ventral face and umbilical shoulder gently and smoothly rounded; terminal face and apertural face weakly concave. Wall smooth with dense small pores. Size: Length, 325 µm; width, 280 µm; height, 140 µm. Etymology: Latin, acuo, make pointed, sharpen; margo, -inis, border, edge; -atus, pertaining to. Extra details from original publication Description based on: Common material. Holotype fig.: Fordham 1986 Pl. 21, fig. B.
References:
Fordham, B. G. (1986). 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. Queensland, Australia. (6): 1-224. gs
Globorotalia miozea acumarginata compiled by the pforams@mikrotax project teamviewed: 20-6-2025
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Fordham 1986 pl21-fig8.JPG
Fordham 1986 pl21-fig8.JPG
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