CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina rotundata jacksonensis Bandy 1949
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.
Original Description Test subglobular, trochoid, dorsal side rather convex, ventral side very deep due to the very rapid increase in height of the chambers except for the last one. which is always very low and flattened; periphery lobulate; edge broadly rounded, only a very slight shoulder ; whorls about three, the last having nearly four chambers; sutures considerably- depressed, slightly curved; wall rather coarsely reticulate but fairly smooth; aperture a moderately high arch on the septal face of the final small chamber opening above a very small umbilicus. Common. Size: Diameter, 0.53 mm; thickness, 0.46 mm. Etymology: Extra details from original publication The contrast of the antepenultimate and penultimate chambers with the small, flattened last chamber is a characteristic which easily distinguishes this variety from G. rotundata d'Orbigny (see Fornasini, 1898 p. 208, tf. 3). Editors' Notes
References:
Bandy, O. L. (1949). Eocene and Oligocene foraminifera from Little Stave Creek, Clarke County, Alabama. Bulletins of American Paleontology. 32(131): 1-210. gs
Fornasini, C. (1898). Le Globigerine fossili d'Italia. Palaeontographia Italica. 4: 203-216. gsVO
Olsson, R. K., Hemleben, C., Huber, B. T. & Berggren, W. A. (2006a). Taxonomy, biostratigraphy, and phylogeny of Eocene Globigerina, Globoturborotalita, Subbotina, and Turborotalita. In, Pearson, P. N., Olsson, R. K., Hemleben, C., Huber, B. T. & Berggren, W. A. (eds) Atlas of Eocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication. 41(Chap 6): 111-168. gsVO
Globigerina rotundata jacksonensis compiled by the pforams@mikrotax project teamviewed: 26-5-2022
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