Annals of the South African Museum: Annale Van Die Suid-Afrikaanse Museum |
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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
Boucot et al . ( 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 ...
Boucot et al . ( 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 ...
Page 229
REFERENCES BOUCOT , A. J. 1975. Evolution and extinction rate controls . Amsterdam : Elsevier . BOUCOT , A. J. , BRUNTON , C. H. C. & THERON , J. N. 1983. Implications for the age of South African Devonian rocks in which Tropidoleptus ...
REFERENCES BOUCOT , A. J. 1975. Evolution and extinction rate controls . Amsterdam : Elsevier . BOUCOT , A. J. , BRUNTON , C. H. C. & THERON , J. N. 1983. Implications for the age of South African Devonian rocks in which Tropidoleptus ...
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Common terms and phrases
abbreviated according articulate brachiopods association author's name authors basal bedding benthic assemblages bivalves Blinkberg Bokkeveld Group Boucot capital collected communities consists containing cycles delta deposited described Devonian Devonian rocks differences displaying DISTRIBUTARY diversity dominated Eastern environment environmental fauna figures gastropod homalonotid Howison's Poort illustrations inarticulate indicate infaunal interpreted intertidal italics known letters Lingula localities lower major marine marine invertebrates mark Member Middle mould Museum Natural History nearshore Note occur original periods placed plant fossils Plectonotus possible quartz arenites range recognized recorded references represent reworking salinity sandstones scientific sediment SEDIMENTARY FACIES separates sequence shales shallow siltstone similar Smith South African species specimens Stratigraphic subtidal suggest Tables Tankard thick thin Touws River trace fossils trilobite unit upper upward-fining valve Wagen Drift Formation Weltevrede Formation Western Cape Witpoort Formation Witteberg Group yielded Zoophycos