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
... trace fossils , in rocks of the lower Witteberg Group in the Willowmore district . Loock ( 1967 ) reported the discovery of a ' Chonetes ' ( brachiopod ) in sandstones in the lower divisions of the Witteberg Group near Robertson ...
... trace fossils , in rocks of the lower Witteberg Group in the Willowmore district . Loock ( 1967 ) reported the discovery of a ' Chonetes ' ( brachiopod ) in sandstones in the lower divisions of the Witteberg Group near Robertson ...
Page 217
... fossils to define depth - associated communities , is that they have lacked complimentary facies analysis that could ... trace fossil Zoophycos ( Spirophyton ) . The upper , Byenest Krans Member , comprises micaceous pale grey to white ...
... fossils to define depth - associated communities , is that they have lacked complimentary facies analysis that could ... trace fossil Zoophycos ( Spirophyton ) . The upper , Byenest Krans Member , comprises micaceous pale grey to white ...
Page 218
... fossils . This in turn , is overlain by the Swartruggens Formation , a relatively thick heterolithic unit comprising siltstone and shale with thin sandstone interbeds , and containing plant fossils and Zoophycos traces . The top of the ...
... fossils . This in turn , is overlain by the Swartruggens Formation , a relatively thick heterolithic unit comprising siltstone and shale with thin sandstone interbeds , and containing plant fossils and Zoophycos traces . The top of the ...
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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