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
... whorl and to ribs arising in groups of two or three from an umbilical tubercle . On the final hook these tubercles also disappear and the ribbing is simple . The suture line is quite simple with trifid internal , umbilical , and lateral ...
... whorl and to ribs arising in groups of two or three from an umbilical tubercle . On the final hook these tubercles also disappear and the ribbing is simple . The suture line is quite simple with trifid internal , umbilical , and lateral ...
Page 307
... whorl section and the tuberculation appears at a very small diameter ( Förster 1975 ; Klinger & Kennedy 1977 ) . Etayo Serna ( 1979 ) proposed a new subgenus and new species of Toxoceratoides : T. ( Colomboceratoides ) renzoni . The ...
... whorl section and the tuberculation appears at a very small diameter ( Förster 1975 ; Klinger & Kennedy 1977 ) . Etayo Serna ( 1979 ) proposed a new subgenus and new species of Toxoceratoides : T. ( Colomboceratoides ) renzoni . The ...
Page 326
... whorl . = Coiling in the first half of the planispiral whorl is irregular , with lateral deviations , but then becomes regular . In most specimens the planispiral whorl embraces the helix tightly , leaving no openings . The first ...
... whorl . = Coiling in the first half of the planispiral whorl is irregular , with lateral deviations , but then becomes regular . In most specimens the planispiral whorl embraces the helix tightly , leaving no openings . The first ...
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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