Annals of the South African Museum, Volume 83The Museum, 1981 - Natual history |
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Page 178
... parabolae, features which never occur on the outer whorls, except in the form of the simple peristome, of mature female forms. That some macroconchs had parabolae on their earliest whorls is revealed by a gigantic phragmocone of O ...
... parabolae, features which never occur on the outer whorls, except in the form of the simple peristome, of mature female forms. That some macroconchs had parabolae on their earliest whorls is revealed by a gigantic phragmocone of O ...
Page 181
... parabolae are associated with halts in growth is evidenced by the change in ribbing direction adorally , and often by a distinct change in inflation immediately after such a feature . Such parabolae are thus virtually identical to the ...
... parabolae are associated with halts in growth is evidenced by the change in ribbing direction adorally , and often by a distinct change in inflation immediately after such a feature . Such parabolae are thus virtually identical to the ...
Page 192
... Parabolae lacking . Whorl section apparently variable . Macroconch large ( +200 mm in diameter ) , strongly inflated , with well - rounded venter and depressed , semicircular whorl section . Primary ribs rursiradiate , terminating in 17 ...
... Parabolae lacking . Whorl section apparently variable . Macroconch large ( +200 mm in diameter ) , strongly inflated , with well - rounded venter and depressed , semicircular whorl section . Primary ribs rursiradiate , terminating in 17 ...
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Common terms and phrases
abbreviations adoral portion Africa Ammonites Amphipoda Astieria atherstoni Sharpe Barnard Baumberger Besairie bicuspidata bifurcate Bochianites body chamber Böse Broom Cantu Chapa Cape Province Cape Town carapace Cistecephalus Collignon compressed Coxa Crustacea d'Orbigny Decapoda densicostatus dentary diameter Dicynodon Diictodon dimorphism distal Distoloceras dorsal fauna figured final whorl forms genera genus growth stages Hauterivian holotype Imlay inflated inner whorls intercalated ribs Kingoria lateral views lectotype macroconch male margin material Maxilla Maxilliped Olcostephanus Olcostephanus Oudenodon outer whorl parabolae Paramelita paratypes Peponocephala Pereopod peristome posterior primary ribs prominent prorsiradiate secondaries ribs between bundles Riccardi RMT RMT Rogersites rursiradiate primaries secondary ribs segment setae Skull slightly South African Museum Spath species spines Subastieria SUID-AFRIKAANSE MUSEUM Sundays River Sundays River Formation synonym Taraises Formation terminate Thieuloy Type specimen Uitenhage umbilical bullae umbilical seam umbilical shoulder umbilical tubercles umbilical walls umbilicus Upper Valanginian uropod Valanginian Vema venter ventral views whorl section