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 216
... trilobites in Witteberg shales at Howison's Poort , near Grahamstown , some forty years ago . Theron ( 1962 ) ... trilobite as a basis for assigning a Lower to Middle Devonian or possibly an Upper Devonian to Lower Carboniferous ...
... trilobites in Witteberg shales at Howison's Poort , near Grahamstown , some forty years ago . Theron ( 1962 ) ... trilobite as a basis for assigning a Lower to Middle Devonian or possibly an Upper Devonian to Lower Carboniferous ...
Page 222
... trilobite , several genera of bivalves , and a bellerophontid gastropod ( Figs 7A - C , 8 ) . The brachiopods include a species of Lingula , Orbiculoidea baini ( Sharpe ) , which is known from the Bokkeveld Group , the Falkland Islands ...
... trilobite , several genera of bivalves , and a bellerophontid gastropod ( Figs 7A - C , 8 ) . The brachiopods include a species of Lingula , Orbiculoidea baini ( Sharpe ) , which is known from the Bokkeveld Group , the Falkland Islands ...
Page 225
... trilobite remains in some doubt but workers at the British Museum ( Natural History ) believe that it might be a ... trilobites with the snail lectonotus , and Boucot ( 1975 ) has documented this association from many parts of the world ...
... trilobite remains in some doubt but workers at the British Museum ( Natural History ) believe that it might be a ... trilobites with the snail lectonotus , and Boucot ( 1975 ) has documented this association from many parts of the world ...
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Common terms and phrases
abbreviated AFRICA articulate brachiopods barrier islands benthic assemblages BENTHIC COMMUNITIES bicuspidata Gould bivalves bivalves and possible Blinkberg Formation Bokkeveld Group Boucot British Museum Natural carbonaceous shales Chonetes Chonetid Community comma cross-bedded deeper-water subtidal conditions delta deposited Devonian rocks environmental External mould facies analysis Falkland Islands fauna Formation near Touws 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 namacolus Orbiculoidea overlain paratypes parentheses pedicle valve punctuation salinity sandstones scientific name sediment SEDIMENTARY FACIES shoreline shouldered italics siltstone and shale Silurian and Devonian SOUTH AFRICAN MUSEUM specimens Spiriferid Community 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 Wagen Drift Formation wash-over Weltevrede Formation Western Cape Witpoort Formation yielded marine invertebrate