Annals of the South African Museum: Annale Van Die Suid-Afrikaanse Museum |
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Page 225
Homalonotids are known to occur in deeper - water environments , but the association with Plectonotus always seems to occur in a shallow SEDIMENTARY FACIES IN THE LOWER WITTEBERG GROUP 225 Palaeoecology.
Homalonotids are known to occur in deeper - water environments , but the association with Plectonotus always seems to occur in a shallow SEDIMENTARY FACIES IN THE LOWER WITTEBERG GROUP 225 Palaeoecology.
Page 226
association with Plectonotus always seems to occur in a shallow nearshore setting ( Boucot 1975 ) . Associations of this sort just described were termed communities by Boucot ( 1975 ) , who defined a community as a recurring association ...
association with Plectonotus always seems to occur in a shallow nearshore setting ( Boucot 1975 ) . Associations of this sort just described were termed communities by Boucot ( 1975 ) , who defined a community as a recurring association ...
Page 228
( 1983 ) discussed these various age determinations and used the presence of the brachiopod Tropidoleptus , a genus that apparently does not occur in similar facies in the underlying Bokkeveld Group , to suggest a Givetian or Frasnian ...
( 1983 ) discussed these various age determinations and used the presence of the brachiopod Tropidoleptus , a genus that apparently does not occur in similar facies in the underlying Bokkeveld Group , to suggest a Givetian or Frasnian ...
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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