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
... recognized in Silurian and Devonian rocks from other parts of the world . At a single locality near the top of the Weltevrede Formation near Grahamstown , four co - existing communities are recognized : a linguloid - orbiculoid ...
... recognized in Silurian and Devonian rocks from other parts of the world . At a single locality near the top of the Weltevrede Formation near Grahamstown , four co - existing communities are recognized : a linguloid - orbiculoid ...
Page 222
... recognized ( Boucot et al . 1983 ) . The first of these is well known from the Bokkeveld Group and its Falkland Islands and South American correlatives . The bivalves are too poorly preserved for even generic identification . The ...
... recognized ( Boucot et al . 1983 ) . The first of these is well known from the Bokkeveld Group and its Falkland Islands and South American correlatives . The bivalves are too poorly preserved for even generic identification . The ...
Page 227
... recognized in the Witteberg Group , showing their relationship to depth and distance from the shore line . ( After Boucot 1975. ) PLECTONOTUS སའ་ ་ ་ LINGULA NUCULITES HOMALONOTID TROPIDOLEPTUS JANEIA PARAPROTHYRIS SANGUINOLITES ...
... recognized in the Witteberg Group , showing their relationship to depth and distance from the shore line . ( After Boucot 1975. ) PLECTONOTUS སའ་ ་ ་ LINGULA NUCULITES HOMALONOTID TROPIDOLEPTUS JANEIA PARAPROTHYRIS SANGUINOLITES ...
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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