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 243
... separated by a clear delimitation ( Fig . 2A ) . The globular capitulum is wider than the stalk . The surface layer is filled with closely - set sclerites . They vary from stout coarsely tuberculate rods less than 0,22 mm long to ...
... separated by a clear delimitation ( Fig . 2A ) . The globular capitulum is wider than the stalk . The surface layer is filled with closely - set sclerites . They vary from stout coarsely tuberculate rods less than 0,22 mm long to ...
Page 298
... separated by wider interspaces . At a slightly larger diameter ( 6 mm ) , the ribs become differentiated and the ornament consists of alternating tuberculate ribs and non - tuberculate intermediaries , both of equal strength . With ...
... separated by wider interspaces . At a slightly larger diameter ( 6 mm ) , the ribs become differentiated and the ornament consists of alternating tuberculate ribs and non - tuberculate intermediaries , both of equal strength . With ...
Page 326
... separated by wide interspaces , with rib density between 20 and 22. In others , the ornament consists of dense ... separation on these grounds alone is impossible . Some specimens are adult after one planispiral whorl at a diameter of ...
... separated by wide interspaces , with rib density between 20 and 22. In others , the ornament consists of dense ... separation on these grounds alone is impossible . Some specimens are adult after one planispiral whorl at a diameter of ...
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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