CATALOG OF ORIGINAL DESCRIPTIONS: Hantkenina alabamensis compressa Parr 1947

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.


Higher levels: pf_cat -> H -> Hantkenina -> Hantkenina alabamensis compressa
Other pages this level: H. alabamensis, H. alabamensis compressa, H. alabamensis primitiva, H. australis, H. brevispina, H. compressa, H. danvillensis, H. dumblei, H. gohrbandti, H. inflata, H. lazzarii, H. lehneri, H. liebusi, H. longispina, H. mccordi, H. mexicana, H. mexicana aragonensis, H. multispinata, H. nanggulanensis, H. nuttalli, H. singanoae, H. trituberculata,

Hantkenina alabamensis compressa

Citation: Hantkenina alabamensis compressa Parr 1947
Rank: sub-species
Type locality: Brown’s Creek, Cape Otway district, Victoria, Australia
Type age: Late Eocene
Holotype Repository: Melbourne; Geology Department of the University of Melbourne.

Current identification/main database link:


Original Description
Test planospiral. compressed, adult whorl with five or six moderately inflated chambers, each as long as broad, furnished with a long hollow peripheral spine which is situated at the front end of the chamber and directed forward; wall finely punctate, surface granulated on the early chambers, later smooth; aperture in the centre of the face of the last-formed chamber, an elongate comparatively narrow, opening widening at the lower end, which is extended forward on each side as a narrow flange.

Size: Dimensions of holotype.— Diameter with spines, 1 mm.; without spines, 0.6 mm.; thickness, 0.2 mm.

Extra details from original publication
This form differs from previously described Hantkeninae in the considerably greater compression of the test and in the shape of the aperture. Occasional examples of H. alabamensis showing similar characters are found in material from U.S.A. in which H. alabamensis is common, but they are not typical of the species as it occurs there. Figures are given to show the range of variation in the Victorian form. It will be noted that some of the specimens in the early stages resemble H. mexicana and H. longispina in having the outer end of the chamber drawn out and terminating in a centrally-placed radial spine. These two species are not known to occur above the lower half of the Bartonian.

References:

Parr, W.J., (1947). An Australian Record of the Foraminiferal Genus Hantkenina. Proceedings of the Royal Society of Victoria, LVIII(I-II): 45-47.


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Hantkenina alabamensis compressa compiled by the pforams@mikrotax project team viewed: 22-7-2018

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