Catalog - Globigerina danvillensis

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Globigerina danvillensis

Citation: Globigerina danvillensis Howe & Wallace 1932

Type sample (& lithostrat): Jackson, Upper Horizon (Bed 2), light yellow clay. Common in both horizons.

Type age (chronostrat): Upper Eocene.

Type locality: Danville Landing on the Ouachita River, Catahoula Parish, Louisiana, U. S. A.

Type repository: Washington; USNM; originally deposited in Louisiana State University Museum Collection, Baton Rouge, Louisiana, C. S. A., Cat. No. 712

Test small, trochoid but nearly planispiral, periphery lobate; chambers few, about eight visible on the dorsal side, about four in the last-formed whorl, almost spherical in shape; sutures depressed; wall calcareous, finely spinose, perforate; aperture an almost circular opening on the ventral side not quite centered on the periphery.

Diameter 0.2 mm.; diameter of largest chamber 0.13 mm

This species differs from Globigerina pseudo-bulloides Plummer in the shape of the aperture and the arrangement of the early coil.

The original combination is given as Globorotalia danvillensis in some sources (e.g Eocene & Oligocene atlases) but is Globigerina danvillensis according to other sources, including the Ellis & Messina catalog.

References:

Howe, H. V. & Wallace, W. E. (1932). Foraminifera of the Jackson Eocene at Danville Landing on the Ouachita, Catahoula Parish, Louisiana. Bulletin of the Geological Survey of Louisiana. 2: 1-118. gs

Huber, B. T., Olsson, R. K. & Pearson, P. N. (2006). Taxonomy, biostratigraphy, and phylogeny of Eocene microperforate planktonic foraminifera (Jenkinsina, Cassigerinelloita, Chiloguembelina, Streptochilus, Zeauvigerina, Tenuitella, and Cassigerinella) and Problematica (Dipsidripella). 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 16): 461-508. gs V O

Pearson, P. N., Wade, B. S. & Huber, B. T. (2018c). Taxonomy, biostratigraphy, and phylogeny of Oligocene Globigerinitidae (Dipsidripella, Globigerinita, and Tenuitella). 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 16): 429-458. gs V O

CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina danvillensis Howe & Wallace 1932

Globigerina danvillensis

References:

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