Annals of the South African Museum: Annale Van Die Suid-Afrikaanse Museum, Volume 106 |
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Page 141
1976a ) , early Late Valanginian to Late Hauterivian ( Biozones D to ? II ) in Pletmos Basin borehole PB - A1 , and in the earliest Late Valanginian ( Biozone D ) Brenton Formation of the southern Cape , South Africa ( McLachlan et al .
1976a ) , early Late Valanginian to Late Hauterivian ( Biozones D to ? II ) in Pletmos Basin borehole PB - A1 , and in the earliest Late Valanginian ( Biozone D ) Brenton Formation of the southern Cape , South Africa ( McLachlan et al .
Page 145
Barremian lower Río Mayer Formation , southern Argentina ( Bertels 1990 ) ; and Late Valanginian ( Biozone B ) of Mngazana Basin , Transkei ( McLachlan et al . 1976a ) and the Late Valanginian to Late Hauterivian ( Biozones B to III ) ...
Barremian lower Río Mayer Formation , southern Argentina ( Bertels 1990 ) ; and Late Valanginian ( Biozone B ) of Mngazana Basin , Transkei ( McLachlan et al . 1976a ) and the Late Valanginian to Late Hauterivian ( Biozones B to III ) ...
Page 197
Vaginulina spp . range from the Late Valanginian ( Biozone Bb ) to Late Hauterivian ( Biozone I ) . Genus Vaginulinopsis Silvestri , 1904 Vaginulinopsis sp . A Fig . 59N Remarks Six specimens are referred to Vaginulinopsis from the ...
Vaginulina spp . range from the Late Valanginian ( Biozone Bb ) to Late Hauterivian ( Biozone I ) . Genus Vaginulinopsis Silvestri , 1904 Vaginulinopsis sp . A Fig . 59N Remarks Six specimens are referred to Vaginulinopsis from the ...
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abundant Albian Algoa Basin Ammobaculites apertural appears Argentina assemblages Astacolus Barremian Bartenstein & Brand base Biozone Bb borehole chambers Clay close coil Colchester core Cretaceous depressed described distinct Dorothia dorsal Early Hauterivian environments Epistomina Espitalié & Sigal examples facing feet Figure final foraminifera genus grey claystone Haplophragmoides Holotype illustrated inflated initial interval Kimmeridgian Lagena Late Hauterivian Biozone Late Valanginian Biozone later Lenticulina lignite Lingulina localities lower Magniez-Jannin margin Masiuk McLachlan McLachlan et al middle Mngazana Nodosaria Occasional occur offshore ornamentation outcrop sample Paratype periphery Pletmos possess present probably rare referred Reinholdella Remarks Reuss ribs Roemer rounded seen shallow shelf shell side view similar SOEKOR South Africa southern species specimens Stratigraphic range studied Sundays River Formation surface sutures Tappan Uitenhage upper usually ventral weakly whorl wide Zone