Annals of the South African Museum: Annale Van Die Suid-Afrikaanse Museum, Volume 106South African Museum, 2003 - Natural history |
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Page 36
... appear down - hole in the Early Hauterivian . Thicknesses of this biozone show some variation , from about 247 m in SM 1/76 down to less than 100 m in CO 1/67 . This time period appears to have been one of substantial re - organization ...
... appear down - hole in the Early Hauterivian . Thicknesses of this biozone show some variation , from about 247 m in SM 1/76 down to less than 100 m in CO 1/67 . This time period appears to have been one of substantial re - organization ...
Page 135
... appears to have tolerated quite a range of environments , from sub - littoral to outer shelf , but is absent in hyposaline facies along the northern margins of the Sundays River Formation . The species is also known from the Late ...
... appears to have tolerated quite a range of environments , from sub - littoral to outer shelf , but is absent in hyposaline facies along the northern margins of the Sundays River Formation . The species is also known from the Late ...
Page 175
... appears in the Late Berriasian , initially in small numbers entirely of the first form described above . From the later Early Valanginian the species becomes common , and the second form of larger - sized tests appears , to disappear ...
... appears in the Late Berriasian , initially in small numbers entirely of the first form described above . From the later Early Valanginian the species becomes common , and the second form of larger - sized tests appears , to disappear ...
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