Annals of the South African Museum: Annale Van Die Suid-Afrikaanse Museum, Volume 106South African Museum, 2003 - Natural history |
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Page 85
... initial coil streptospiral , whereas the initial coil of Ammobaculites is planispiral . Examination of Sundays River Formation tests failed to reveal any with a cribrate aperture . The interior of the chambers in broken specimens ( Fig ...
... initial coil streptospiral , whereas the initial coil of Ammobaculites is planispiral . Examination of Sundays River Formation tests failed to reveal any with a cribrate aperture . The interior of the chambers in broken specimens ( Fig ...
Page 87
... initial coil , with up to four inflated chambers in the rectilinear portion . Sutures depressed , horizontal , straight in uncoiled portion , and indistinct in initial coil . The aperture is always obscured , but presumably terminal and ...
... initial coil , with up to four inflated chambers in the rectilinear portion . Sutures depressed , horizontal , straight in uncoiled portion , and indistinct in initial coil . The aperture is always obscured , but presumably terminal and ...
Page 141
... initial coil varies from six to ten . Those with more chambers possess larger - sized initial coils than those with fewer chambers , with the smallest coils being composed of just over one whorl : these differences may reflect ...
... initial coil varies from six to ten . Those with more chambers possess larger - sized initial coils than those with fewer chambers , with the smallest coils being composed of just over one whorl : these differences may reflect ...
Contents
Introduction | 5 |
Foraminiferal biozonation of the Sundays River Formation | 33 |
The Algoa Basin outcrops | 44 |
Copyright | |
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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