Catalog - Globorotalia mayeri

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Globorotalia mayeri

Citation: Globorotalia mayeri Cushman & Ellisor 1939

Type specimens: Holotype (Cushman CoIl. No. 25236)

Type sample (& lithostrat): core sample, Humble Oil and Refining Company's No.1 Ellender, at a depth of 9,612 feet.

Type locality: Terrebonne Parish, Louisiana

Type repository: Washington; USNM

Test unequally biconvex, the dorsal side slightly convex or nearly flattened, ventral side strongly convex and umbilicate, periphery very broadly rounded; chambers distinct, strongly in flated, increasing rapidly in size as added, of uniform shape, about six in the adult whorl; sutures distinct, slightly depressed, some what Iimbate on the dorsal side, on the ventral side more strongly depressed; wall smooth, coarsely and distinctly perforate; aper ture large, extending on the ventral side from the umbilicus nearly to the middle of the peripheral margin, with a slight lip.

Length 0.35-0.40 mm. ; breadth 0.27-0.30 mm. ; thickness 0.22 mm.

This species is named for Maurice J. Mayer

This species differs from Globorotalia scitula (H. B. Brady) in the much thicker test, very much more rounded periphery, larger aperture, and more coarsely perforate wall.

Paper printed in March 1939, so before descrpition of Globorotalia siakensis LeRoy in November, 1939 (Bolli & Saunders 1982)

References:

Bolli, H. M. & Saunders, J. B. (1982a). Bolli, H. M. & Saunders, J. B. (1982). Globorotalia mayeri and its relationship to Globorotalia siakensis and Globorotalia continuosa,. Journal of Foraminiferal Research. 12(1): 39-50. Journal of Foraminiferal Research. 12(1): 39-50. gs

Bolli, H. M. & Saunders, J. B. (1982b). Bolli, H. M. & Saunders, J. B. (1982). Annotation Globorotalia mayeri and Globorotalia siakensis: Priorities. Journal of Foraminiferal Research. 12(4): 369-. Journal of Foraminiferal Research. 12(4): 369-. gs

Cushman, J. A. & Ellisor, A. C. (1939). Cushman, J. A. & Ellisor, A. C. (1939). New species of foraminifera from the Oligocene and Miocene. Contributions from the Cushman Laboratory for Foraminiferal Research. 15: 1-14. Contributions from the Cushman Laboratory for Foraminiferal Research. 15: 1-14. gs

Leckie, R. M., et al. (2018). Leckie, R. M. et al. (2018). Taxonomy, biostratigraphy, and phylogeny of Oligocene and Lower Miocene Paragloborotalia and Parasubbotina. In, Wade, B. S., Olsson, R. K., Pearson, P. N., Huber, B. T. & Berggren, W. A. (eds) Atlas of Oligocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication . 46(Chap 5): 125-178. In, Wade, B. S., Olsson, R. K., Pearson, P. N., Huber, B. T. & Berggren, W. A. (eds) Atlas of Oligocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication . 46(Chap 5): 125-178. gs

LeRoy, L. W. (1939). LeRoy, L. W. (1939). Some small foraminifera ostracoda and otoliths from the Neogene (Miocene) of the Rokan-Tapanoeli area, central Sumatra,. Natuurk. Tijdschr. Nederl.-Indie. 99(6): 215-296. Natuurkunde Tijdschrift voor Nederlandsch-Indië. 99(6): 215-296. gs

CATALOG OF ORIGINAL DESCRIPTIONS: Globorotalia mayeri Cushman & Ellisor 1939

Globorotalia mayeri

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