Annals of the South African Museum, Volume 83The Museum, 1981 - Natual history |
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Page 193
... outer whorl . There are fewer umbilical bullae on the earlier whorls . From the umbilical bullae arise bundles of usually 4 fine secondary ribs , rarely 3 or 5 , with commonly 2 intercalated ribs between bundles , although there may ...
... outer whorl . There are fewer umbilical bullae on the earlier whorls . From the umbilical bullae arise bundles of usually 4 fine secondary ribs , rarely 3 or 5 , with commonly 2 intercalated ribs between bundles , although there may ...
Page 302
... outer whorl ( about 65 mm diameter ) and 24 per 6 bullae on the adoral portion . There are invariably 1-2 intercalated ribs between bundles , with 11 secondaries within a 30 mm distance along the venter of the outer whorl . The outer whorl ...
... outer whorl ( about 65 mm diameter ) and 24 per 6 bullae on the adoral portion . There are invariably 1-2 intercalated ribs between bundles , with 11 secondaries within a 30 mm distance along the venter of the outer whorl . The outer whorl ...
Page 314
... outer whorl . Each bulla gives rise to bundles of 3-4 fine secondaries , often with an intercalated rib between bundles . On the adapical portion of the outer whorl , however , the nature of the secondary ribbing changes significantly ...
... outer whorl . Each bulla gives rise to bundles of 3-4 fine secondaries , often with an intercalated rib between bundles . On the adapical portion of the outer whorl , however , the nature of the secondary ribbing changes significantly ...
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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 Rogersites rursiradiate primaries secondary ribs segment setae slightly South African Museum Spath species spines Subastieria Sundays River Sundays River Formation synonym Taraises Formation terminate Thieuloy Type specimen Type specimen Skull Uitenhage umbilical bullae umbilical seam umbilical shoulder umbilical tubercles umbilical walls umbilicus Upper Valanginian uropod Valanginian Vema venter Ventral and lateral ventral views whorl section