Vonkleinsmidoides: Brief Summary
(
espagnol ; castillan
)
fourni par wikipedia ES
Vonkleinsmidoides es un género de foraminífero bentónico de la Subfamilia Eponidinae, de la Familia Eponididae, de la Superfamilia Discorboidea, del Suborden Rotaliina y del Orden Rotaliida. Su especie-tipo es Vonkleinsmidoides unica. Su rango cronoestratigráfico abarca el Holoceno.
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Diagnosis
(
anglais
)
fourni par World Register of Marine Species
Test low trochospiral, lenticular, spiral side weakly convex, chambers crescentic, the two rapidly enlarging whorls visible on the spiral side, prominent beads at the junction of spiral and radial sutures being the equatorial remnants of former apertural lips, umbilical side flattened to centrally depressed, partially evolute, nine chambers in the final whorl, sutures curved backward at the periphery, thickened and elevated on the spiral side, depressed on the umbilical side, umbilicus covered with clear shell material, small umbilical flap present at the junction of the umbilical margin and basal suture of the final chamber, flaps of earlier chambers of the final whorl remaining as nodelike elevations around the spiral suture, periphery carinate; wall calcareous, perforate but with imperforate apertural face, sutures, and keel, surface smooth and polished; aperture a low interiomarginal arch with protruding lip on the umbilical side adjacent to the peripheral keel and nearly equatorial, the opening continuing as a spiralling slit around the umbilical margin of the chambers of the final whorl. Holocene; Mexico. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification)
Loeblich, A. R.; Tappan, H. (1987). Foraminiferal Genera and their Classification. Van Nostrand Reinhold Company, New York. 970pp.
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