Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumWest, Newman & Company for the trustees of the Museum, 1990 - Natural history |
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Page 215
... diversity of this brachiopod assemblage suggests somewhat deeper water than the Weltevrede Formation assemblage , probably subtidal . The sedimentary facies of the Wagen Drift Formation are interpreted as having formed in a delta slope ...
... diversity of this brachiopod assemblage suggests somewhat deeper water than the Weltevrede Formation assemblage , probably subtidal . The sedimentary facies of the Wagen Drift Formation are interpreted as having formed in a delta slope ...
Page 225
... diversity usually with no more than five taxa ( Raup & Stanley 1971 : 208 ) . It seems reasonable to suggest , therefore , that abundant Lingula in the Witteberg Group represents a nearshore setting , possibly with fluctuating salinity ...
... diversity usually with no more than five taxa ( Raup & Stanley 1971 : 208 ) . It seems reasonable to suggest , therefore , that abundant Lingula in the Witteberg Group represents a nearshore setting , possibly with fluctuating salinity ...
Page 226
... diversity chonetid community , and a high - diversity spiriferid community stretches across benthic assemblages 4 and 5. The trace fossil Zoophycos is said to range through benthic assemblages 3-5 . Figure 9 provides a summary of this ...
... diversity chonetid community , and a high - diversity spiriferid community stretches across benthic assemblages 4 and 5. The trace fossil Zoophycos is said to range through benthic assemblages 3-5 . Figure 9 provides a summary of this ...
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Common terms and phrases
abbreviated AFRICA articulate brachiopods barrier islands basal Witteberg beds benthic assemblages BENTHIC COMMUNITIES Blinkberg Formation Bokkeveld Group Boucot British Museum Natural carbonaceous shales Chonetes comma cross-bedded delta deposited Devonian rocks environmental External mould facies analysis Falkland Islands fauna Frasnian gastropod genus Givetian Grahamstown high-diversity holotype homalonotid trilobite horizontal lamination Howison's Poort inarticulate infaunal interpreted Leda Lingula lepta LOWER WITTEBERG GROUP Museum Natural History Orbiculoidea overlain paratypes parentheses pedicle valve Plectonotus sp punctuation quartz arenite unit registration number ripple cross-laminated sandstone Roman numerals salinity sandstones scientific name sediment SEDIMENTARY FACIES shoreline siltstone and shale Silurian and Devonian SOUTH AFRICAN MUSEUM specimens Spiriferid Stratigraphic subheadings are shouldered suspension feeders SWARTRUGGENS FORMATION Synonymy Tankard & Barwis taxa Theron thin tidal tidal-flat Touws River trace fossils Trigonoglossa Tropidoleptus sp Upper Devonian upward-fining cycles vicinity of Touws volume number Wagen Drift Formation wash-over WELTEVREDE FORMATION Fig Western Cape yielded marine invertebrate