Annals of the South African Museum: Annale Van Die Suid-Afrikaanse Museum, Volume 96, Issues 6-9South African Museum, 1986 - Natural history |
From inside the book
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Page 281
... coiling and on the ornament : Acrioceras ( Acrioceras ) s.s .: coiling acrioceratid ; ornament with tuberculate ribs . Acrioceras ( Paraspinoceras ) ( Breistroffer ) : coiling acrioceratid ; non - tuberculate ribs . Acrioceras ...
... coiling and on the ornament : Acrioceras ( Acrioceras ) s.s .: coiling acrioceratid ; ornament with tuberculate ribs . Acrioceras ( Paraspinoceras ) ( Breistroffer ) : coiling acrioceratid ; non - tuberculate ribs . Acrioceras ...
Page 294
... coiling . Discussion Leanza ( 1970 ) , when proposing this species , indicated that it belonged to the ' Leptoceras ' silesiacum group . He also pointed out that according to Anderson ( 1938 ) the species had to be referred to the genus ...
... coiling . Discussion Leanza ( 1970 ) , when proposing this species , indicated that it belonged to the ' Leptoceras ' silesiacum group . He also pointed out that according to Anderson ( 1938 ) the species had to be referred to the genus ...
Page 295
... coiling , suture line , and ornament of the shaft . Casey ( 1961 : 77 ) accepted the validity of the genus and characterized it as : ' Coiling ancyloceratid or leptoceratid ; may commence with a very small helix . Phragmocone ornamented ...
... coiling , suture line , and ornament of the shaft . Casey ( 1961 : 77 ) accepted the validity of the genus and characterized it as : ' Coiling ancyloceratid or leptoceratid ; may commence with a very small helix . Phragmocone ornamented ...
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Common terms and phrases
Acrioceras Aedeagus Alcyonium variabile ammonites Ammonoidea Anal sternite Ancyloceras apex apical apomorphic Aptian arcuate asymmetrical Barremian of western basal bifid Cape Town capitulum Casey clypeus coenenchyme coiling Colchidites vulanensis australis colonies Colophon Colophon species CPBA Cretaceous d'Orbigny dilated Djanélidzé Dorsal process elytra evenly final hook forms fragments genera geol habitat Hamiticeras haughtoni Helicancylus patagonicus helix Heteroceras Heteroceratinae holotype izardi K. H. Barnard Kakabadze & Kennedy Kakabadze 1971a Klinger & Kennedy Koenen labrum Langeberg Leanza Lectotype Lucanidae Macroconch male mandibles material Metalcyonium montisatris sp morph ornament paessleri Paraimerites paramere Patagonia patagonicum planispiral plesiomorphic polyp primosi pronotum punctate referred ribs Río Mayer Río Mayer Formation Rouchadzé 1933 rounded sclerites shaft South African Museum Spath speciation species groups specimens stalk sternite stokoei Stolley suture line Swartberg Swartberg Range text-fig Thomson tibia Tixier-Durivault Tonohamites trituberculate tubercles Upper Barremian Ventral process vulanensis australis Klinger western Georgia whitei whorl section Zululand