Catalog - Hantkenina alabamensis

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Hantkenina alabamensis

Citation: Hantkenina alabamensis Cushman 1924

Type specimens: Plate 1, figs. 1-6; plate 2, fig. 5; 353082; p3-4

Type sample (& lithostrat): Zeuglodon bed

Type locality: Cocoa post office, Alabama, Alabama,

Type repository: Washington; USNM

Test planospiral, compressed, adult coil with 5 or 6 chambers, periphery very slightly if at all lobulated, wall very finely punctate, smooth, granular near the aperture, each chamber with a hollow, slender, acicular spine at the periphery, pointing somewhat anteriorly; aperture tripartite, with an elongate projection along each side at the base of the aperturtal face, and the third, median, extending pripherally from tha base of the apertural face.

Diameter without spines 0.45 mm., with spines 0.75 mm.

There are specimens from Mexico in the United States National Museum collections which seem identical with this species. They are from fine sandy clay, Rio Buena Vista, just south of crossing of Alazan to Moyutla road, Vera Cruz; fossil horizons 3 and 4; light gray sandy clay, Rio Tuxpan, south side just above Agua Nacida, Vera Cruz, all three lots collected by T. W. Vaughan. This is the most delicate of the various species.

It is very abundant at the type locality and occurs in other parts of the Coastal Plain in the Upper Eocene.

References:

Bolli, H. M., Loeblich, A. R. & Tappan, H. (1957). Planktonic foraminiferal families Hantkeninidae, Orbulinidae, Globorotaliidae and Globotruncanidae. In, Loeblich, A. R. , Jr., Tappan, H., Beckmann, J. P., Bolli, H. M., Montanaro Gallitelli, E. & Troelsen, J. C. (eds) Studies in Foraminifera. U.S. National Museum Bulletin. 215: 3-50. gs V O

Coxall, H. K. & Pearson, P. N. (2006). Taxonomy, biostratigraphy, and phylogeny of the Hantkeninidae (Clavigerinella, Hantkenina and Cribrohantkenina). 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 8): 213-256. gs V O

Cushman, J. A. (1924a). A new genus of Eocene foraminifera. Proceedings of the United States National Museum. 66(30): 1-4. gs

Cushman, J. A. (1925a). A new genus of Eocene foraminifera. Proceedings of the United States National Museum. 66(30): 1-4. gs V O

CATALOG OF ORIGINAL DESCRIPTIONS: Hantkenina alabamensis Cushman 1924

Hantkenina alabamensis

References:

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