Annals of the South African Museum: Annale Van Die Suid-Afrikaanse Museum, Volume 106South African Museum, 2003 - Natural history |
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Page 92
... Sutures initially indistinct , flush , later becoming weakly depressed , and sub - horizontally aligned . The median suture forms a neatly constructed zigzag . Aperture interio - marginal , a low , slit - like opening at the base of the ...
... Sutures initially indistinct , flush , later becoming weakly depressed , and sub - horizontally aligned . The median suture forms a neatly constructed zigzag . Aperture interio - marginal , a low , slit - like opening at the base of the ...
Page 95
... sutures on the dorsal side . Tests similar to the Sundays River shells occur also in the Portlandian Colchester ... sutures , weakly curved , radiate , depressed ventral sutures , and a broad , shallow umbilicus . Material Holotype ...
... sutures on the dorsal side . Tests similar to the Sundays River shells occur also in the Portlandian Colchester ... sutures , weakly curved , radiate , depressed ventral sutures , and a broad , shallow umbilicus . Material Holotype ...
Page 135
... sutures of the Brenton form remain raised and limbate across the entire width of the test , and through most of the test , but they become depressed between the final few chambers . The dorsal periphery is ornamented with a wide ...
... sutures of the Brenton form remain raised and limbate across the entire width of the test , and through most of the test , but they become depressed between the final few chambers . The dorsal periphery is ornamented with a wide ...
Contents
Introduction | 5 |
Foraminiferal biozonation of the Sundays River Formation | 33 |
The Algoa Basin outcrops | 44 |
Copyright | |
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Common terms and phrases
Agrio Formation Albian ammonites apertural view Aptian Argentina assemblages Astacolus Barremian Bartenstein & Brand Berriasian Bettenstaedt borehole borehole PB-A1 Citharina Cliff outcrop sample Coega Coega Brick Pits core Dentalina DIEGO Dorothia dorsal margin down-hole appearance Early Barremian Early Cretaceous Early Hauterivian environments Eoguttulina Epistomina caracolla Espitalié & Sigal feet VII Figure final chamber final whorl foraminifera genus Graaff-Reinet grey claystone Haplophragmoides sp hofkeri Holotype illustrated Kimmeridgian Kirkwood Formation Lagena Late Hauterivian Biozone Late Valanginian Biozone lignite Lingulina Loeblich & Tappan Magniez-Jannin 1975 Majunga Basin Masiuk & Viña McLachlan Mngazana Basin Musacchio Nodosaria occur offshore ornamentation ostracods Paratype Planularia Pletmos Basin Portlandian rare lignite Reinholdella valendisensis Remarks Reuss Río Mayer Roemer shallow borehole shelf shell side view silty SOEKOR negative South Africa southern species specimens Stratigraphic range Sundays River Formation sutures test periphery test wall Trochammina Uitenhage Uitenhage to Graaff-Reinet Vaginulinopsis weakly Zoetgeneugd Cliff outcrop