Citation: Globigerina crassaformis Galloway & Wissler 1927Rank: speciesType specimens: Plate 7, fig. 12Type sample (& lithostrat): from the middle bed at the D. M. S. & B. Quarry; Lower San Pedro Fm.Type age (chronostrat): PleistoceneType locality: Lomita Quarry, Palos Verdes Hills, CaliforniaType repository: Columbia University Paleo. Coll. No. I98I6,
Original Description Test rotaliform, dorsal side flat, ventral side convexly rounde umbilicate, periphery rounded, lobated; chambers few, usually about four in the last formed coil, inflated, rapidly increasing in size; sutures distinct, curved, deep, not limbate; wall granular or subspinose, very finely perforate; aperture an elogate opening extending from the umbilicus, where it is widest, almost to the peripheral margin and sometimes provided with a narrow lip. Size: Diameter of the type specimen, 0.40 mm.; height, Extra details from original publication
Pulvinulina crassa H. B. BRADY (not Rotalina crassa d'Orbigny), Rep. Voy. Challenger, Z vol. 9, I884, p. 694, pi. 103, figs. II, I2.-FLINT, Rep. U. S. Nat. Mus., I897 (I899), p. pl. 74, fig. 2.--CUSHMAN, U. S. Nat. Mus. Bull. 71, pt. 5, I9I5, p. 58
Occurrence.- Rare in the middle bed at the D. M. S. & B. Quarry. Not presen in the Timms Point Pliocene material we have examined. Rare to common in well samples from the Saugus and rare in those from the Upper Pico of the Los Angeles Basin. Numerous authors have figured it from Recent material. This species differs from Rotalina crassa d'Orbigny (Mem. Soc. Geol. France, vol. 4, 1840, p. 32, pl. 3, figs. 7, 8) from the Upper Cretaceous of France, by its more inflated chambers which are fewer to a coil; its deeper sutures; its more angled periphery and by the character of the aperture.
Galloway, J. J. & Wissler, S. G. (1927). Pleistocene foraminifera from the Lomita Quarry, Palos Verdes Hills, California. Journal of Paleontology. 1(1): 35-87. gsVO
Hornibrook, N. d. B. (1981). Globorotalia in the late Pliocene and early Pleistocene of New Zealand. New Zealand Journal of Geology and Geophysics. 24: 263-292. gsVO
Globigerina crassaformis compiled by the pforams@mikrotax project teamviewed: 22-3-2023