Annals of the South African Museum, Volume 83The Museum, 1981 - Natual history |
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Page 192
... inflated , with well - rounded venter and depressed , semicircular whorl section . Primary ribs rursiradiate , terminating in 17-25 bullae at the umbilical shoulder from which arise bundles of 3-4 secondaries , with 1-2 intercalatories ...
... inflated , with well - rounded venter and depressed , semicircular whorl section . Primary ribs rursiradiate , terminating in 17-25 bullae at the umbilical shoulder from which arise bundles of 3-4 secondaries , with 1-2 intercalatories ...
Page 266
... inflated , with a strongly depressed whorl section . The earliest whorls are only moderately inflated and up to a diameter of about 60 mm closely resemble the microconch , from which they differ only in being slightly more inflated and ...
... inflated , with a strongly depressed whorl section . The earliest whorls are only moderately inflated and up to a diameter of about 60 mm closely resemble the microconch , from which they differ only in being slightly more inflated and ...
Page 312
... inflated , globose cadicone with a narrow umbilicus and steep umbilical walls . The whorls , involute up to the umbilical bullae on the inner whorls , become rather evolute on the adoral portion of the outer whorl . Distinct primaries ...
... inflated , globose cadicone with a narrow umbilicus and steep umbilical walls . The whorls , involute up to the umbilical bullae on the inner whorls , become rather evolute on the adoral portion of the outer whorl . Distinct primaries ...
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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