Annals of the South African Museum: Annale Van Die Suid-Afrikaanse Museum, Volume 96, Issues 6-9South African Museum, 1986 - Natural history |
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Page 302
... shaft and beginning of the hook , the lateral and ventral tubercles disappear and the ornament changes to narrow , simple , sharp ribs that pass radially around the whorl and to ribs arising in groups of two or three from an umbilical ...
... shaft and beginning of the hook , the lateral and ventral tubercles disappear and the ornament changes to narrow , simple , sharp ribs that pass radially around the whorl and to ribs arising in groups of two or three from an umbilical ...
Page 320
... shaft and recurved hook . In some forms an uncoiled section has not yet been recorded , and it is suspected that they may reach maturity in the planispirally coiled stage . As discussed earlier ( Klinger 1976 : 8 ) division into ...
... shaft and recurved hook . In some forms an uncoiled section has not yet been recorded , and it is suspected that they may reach maturity in the planispirally coiled stage . As discussed earlier ( Klinger 1976 : 8 ) division into ...
Page 323
... shaft . The whorl section in the helix is subcircular ; on the shaft it varies from slightly compressed to depressed , and on the crozier it becomes equidimensional to subquadrate . Ornament on the helix consists of fine , single ...
... shaft . The whorl section in the helix is subcircular ; on the shaft it varies from slightly compressed to depressed , and on the crozier it becomes equidimensional to subquadrate . Ornament on the helix consists of fine , single ...
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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