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 320
... planispiral section and Eristavia and Imerites are both quadri - tuberculate on part of the planispiral whorls . Eristavia differs from Imerites in having intercalatory and bifurcating ribs ; the latter originate at the ventrolateral ...
... planispiral section and Eristavia and Imerites are both quadri - tuberculate on part of the planispiral whorls . Eristavia differs from Imerites in having intercalatory and bifurcating ribs ; the latter originate at the ventrolateral ...
Page 326
... planispiral section , forming an acute angle of between 31 and 42 degrees . The apex of the helix rests on the umbilical edge of the planispiral section . The whorl section in the helix is slightly depressed , subquadrate with rounded ...
... planispiral section , forming an acute angle of between 31 and 42 degrees . The apex of the helix rests on the umbilical edge of the planispiral section . The whorl section in the helix is slightly depressed , subquadrate with rounded ...
Page 350
... planispiral whorl ; and macroconchs with more than two planispiral whorls still septate at diameters exceeding 150 mm . The microconchs show apertural modifications in the planispiral section , clearly ruling out the possibility of an ...
... planispiral whorl ; and macroconchs with more than two planispiral whorls still septate at diameters exceeding 150 mm . The microconchs show apertural modifications in the planispiral section , clearly ruling out the possibility of an ...
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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