Taxon Concept provided by
  Home |   Search

Click on a letter below to get a list of species:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z all
Archaeoglobigerina mateola Huber 1990 from: Huber, B.T. (1990): Maestrichtian planktonic foraminifer biostratigraphy of the Maud Rise (Weddell Sea, Antarctica): ODP Leg 113 Holes 689B and 690C. In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 113 Eds: Barker, P.F.Kennett, J.P.O'Connell, S.B.Pisias, N.G. p. 489-513
.
Anonymous: Unedited TaxonConcept data
Notice: This catalogue page may contain unedited data.

Species Archaeoglobigerina mateola Huber 1990


Diagnosis / Definition:
Huber (1990):
Test moderate to high spired, often unequally biconvex, chambers increasing moderately in size, three and three-quarters to four and one-half in final adult whorl, adult aperture umbilical, often covered by a flap or thickened bulla, final chambers usually kummerform, surface distinctly ornamented by coarse pustules or long, narrow spines.
Discussion / Comments:
Huber (1990):
Etymology: From mateus (latin), a medieval war club with a blunt, spiny terminus.
Description: Test coiled in a moderate to high spire, equally to unequally biconvex, spiral side often more convex than umbilical side, average diameter of adult specimens 280 µm, average breadth 190 µm. Chambers globular, inflated, increasing moderately in size, three and threequarters to four and one-half in the final adult whorl, four to four and one-half in the penultimate whorl, 10-12 comprising the tests of adult specimens, final chambers usually kummerform. Proloculus diameter averaging 17 µm, initial whorl diameter averaging 74 µm, with a mean of 4.5 chambers in the initial whorl. Sutures radial and straight, strongly depressed on umbilical side, moderately depressed on spiral side. Aperture umbilical in position on adult specimens, usually obscured by a broad flap or thickened umbilical bulla. Apertures of juvenile specimens umbilical to extra-umbilical, having greater width than height. Surface distinctly ornamented with randomly situated, large pustules or high, narrow spines on adult specimens, smooth to finely pustulose on juveniles. Outer wall radial hyaline and finely perforate.
Remarks: This species has a very unusual external morphology compared with other known Late Cretaceous planktonic foraminifer taxa. Similarity in the ontogenetic development of this species suggests a close ancestral relationship with A. australis (Huber, 1988b). Inclusion in Archaeoglobigerina is primarily because of the globigerine chamber arrangement and absence of meridional costellae. Neither tegilla nor peripheral keel bands were observed in the Maud Rise populations, however, so similarity to the original definition of Archaeoglobigerina (see Pessagno,1967, p. 315) is limited.
Synonym list:
Huber (1990):
1988 Rugoglobigerina? sp.2 Huber. - Huber : p. 207 figs. 31.12, 15-16
1990 Archaeoglobigerina n sp. mateola Huber. - Huber : Pl. 3, Figs. 8-10; Pl. 4, Figs. 1-3; Pl. 6, Fig. 6
References:

Huber,B.T. (1988):
Upper Campanian-Paleocene foraminifera from the James Ross Island region (Antarctic Peninsula).
In: Geology and Paleontology of Seymour Island, Antarctica, Memoirs of the Geological Society of America Vol. 169 Eds: Feldmann, R.M..Woodburne, M.O.. p. 163-251

Huber,B.T. (1990):
Maestrichtian planktonic foraminifer biostratigraphy of the Maud Rise (Weddell Sea, Antarctica): ODP Leg 113 Holes 689B and 690C.
In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 113 Eds: Barker, P.F.Kennett, J.P.O'Connell, S.B.Pisias, N.G. p. 489-513
Anonymous: Unedited TaxonConcept data
Creative Commons Attribution 2.5 License
This work is licensed under a Creative Commons Attribution 2.5 License.