Annals of the South African Museum: Annale Van Die Suid-Afrikaanse Museum, Volume 106South African Museum, 2003 - Natural history |
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Page 95
... weakly curved , radiate , depressed sutures on the ventral side and oblique , backward - curving , depressed sutures on the dorsal side . Tests similar to the Sundays River shells occur also in the Portlandian Colchester Member of the ...
... weakly curved , radiate , depressed sutures on the ventral side and oblique , backward - curving , depressed sutures on the dorsal side . Tests similar to the Sundays River shells occur also in the Portlandian Colchester Member of the ...
Page 241
... weakly convex and somewhat thickened or ' calcified ' ; test periphery circular , occasionally weakly lobate in the final part ; in cross - section test margin is rounded in juveniles , becoming sub - angular in adults . Chambers ...
... weakly convex and somewhat thickened or ' calcified ' ; test periphery circular , occasionally weakly lobate in the final part ; in cross - section test margin is rounded in juveniles , becoming sub - angular in adults . Chambers ...
Page 247
... weakly raised , limbate , becoming weakly raised , oblique and gently curved . Aperture interio - marginal , a low elongate slit developed from the final sutural incision , past the umbilicus to an extra- umbilical position some ...
... weakly raised , limbate , becoming weakly raised , oblique and gently curved . Aperture interio - marginal , a low elongate slit developed from the final sutural incision , past the umbilicus to an extra- umbilical position some ...
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