CATALOG OF ORIGINAL DESCRIPTIONS: Rugoglobigerina kingi Trujillo 1960
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.
Citation: Rugoglobigerina kingi Trujillo 1960Taxonomic rank: speciesType specimens: pl. 49, fig. 5a-c, holotype, X s8:: holotype, no. 26678; and unfigured paratypes, no. 26679.Type age (chronostrat): Upper Cretaceous, Senonias, Coniacian, Member IV of Popenoe (1943, Amer. Assoc. Petr. Geol., Bull., vol. 27, no. 31; in a gray shale with sandstone stringers. May prove to be an important Coniarian marker.Type locality: Holotype from along Clover Creek, about 1200 feet west and 800 feet south of the NE corner sec. 32, T. 32 N., R 2 W., east of Redding, in Shasta County, California.Type repository: Los Angeles; Invertebrate Paleontological Collection of the University of California, Los Angeles;
Current identification:
Original Description "The shape of the test of Rugoglobigerina Ringi is rotaloid, compressed, spiral side gently convex, umbilical side flattened, with about three whorls visible in the spire and only the last one visible on the umbilical side . The periphery is lobulate and edge is rounded. There are six to eight inflated chambers in the ultimate whorl that increase regularly in size as added. Sutures are distinct, depressed, straight and radial on both sides. The wall is calcareous, perforate, rugose, but rather variable in the amount of rugosity, with the ultimate chamber often smooth or nearly so. The umbilicus is quite deep and relatively large . Aperture is interiomarginal, opening into the umbilicus, forming a rather high arch with an indistinct lip. Coiling of observed specimens is random, both sinistral and dextral, in about equal numbers. The holotype measures 0.37 mm in diameter and 0.21 mm. in thickness. Extra details from original publication "Remarks. - Characteristic features of this new species are the convex spiral side, flattened and deeply umbilicate umbilical side, number of chambers, final chamber tending to be smooth, and the high arched aperture.
"This species differs from Rugoglobigerina praehelvetica Trujillo primarily in having an evenly convex spiral sicde and less rapidly expanding chambers."
References:
Georgescu, M. D. (2010b). Georgescu, M. D. (2010b). Evolutionary classification of the Upper Cretaceous (Turonian-lower Campanian) planktic foraminifera with incipient meridional ornamentation. Journal of Micropalaeontology. 29: 149-161. Journal of Micropalaeontology. 29: 149-161. gs
Trujillo, E. F. (1960). Trujillo, E. F. (1960). Upper Cretaceous foraminifera from near Redding, Shasta County, California. Journal of Paleontology. 34: 290-346. Journal of Paleontology. 34: 290-346. gs
Rugoglobigerina kingi compiled by the pforams@mikrotax project teamviewed: 8-7-2025
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