CATALOG OF ORIGINAL DESCRIPTIONS: Hantkenina trituberculata Morrow 1934

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 trituberculata
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 trituberculata

Citation: Hantkenina trituberculata Morrow 1934
Rank: Species
Type locality: Kansas; sec. 31, T. 21 S., R. 22 W., Hodgeman County,
Type sample and level: Heartland Shale
Holotype Repository: Washington; USNM
Type & figured specimens: 75373

Linked specimens: USNM-75373

Current identification/main database link: Schackoina multispinata (Cushman and Wickenden, 1930)


Original Description
Test small, almost planispiral; chambers globular in all stages, usually nearly spherical, in last whorl possessing from one to three long, distal, tubular extensions sometimes more than twice the length of the diameter of the globose part of the chamber. If only one tube occurs it lies in the median plane, if two they lie one on either side of this plane, and if three occur one is median and the others paired beside it. The tubes join the bulbous chamber quite abruptly with very little flaring. There are usually three chambers in the last whorl though occasionally four.

Size: Length of longest specimen 0.75 mm., diameter of last chamber 0.16 mm.

Extra details from original publication
This species closely resembles the young of H. multispinata Cushman and Wickenden (32, p. 40, pl. 6, figs. 4-6) except for its more nearly spherical chambers. The Kansas specimens are doubtless adult forms for individuals similar to those figured are very common locally. H. multispinata differs from H. trituberculata in the possession of polyhedral chambers and considerably shorter spines. The chambers of the Kansas species are similar in form to H. cenomana (Schako) but in the latter there are four in the last whorl, each bearing a single spine except the last which lacks the tubular process. In its development and stratigraphic position H. trituberculata represents an intermediate stage between H. cenomana and H. multispinata.
The species is rather common in the Hartland shale of the Greenhorn formation and in the Smoky Hill member of the Niobrara.

References:

Morrow, A.L., (1934). Foraminifera and ostracoda from the Upper Cretaceous of Kansas. Journal of Paleontology, 8: 186-205.


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Hantkenina trituberculata compiled by the pforams@mikrotax project team viewed: 20-9-2018

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