Annals of the South African Museum, Volume 83The Museum, 1981 - Natual history |
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Page 192
... umbilical bullae so that about 75 per cent of the previous whorl is covered . The shell becomes slightly more evolute as the umbilical seam egresses on the adoral portion of the body chamber . About 18 rursiradiate primary ribs ...
... umbilical bullae so that about 75 per cent of the previous whorl is covered . The shell becomes slightly more evolute as the umbilical seam egresses on the adoral portion of the body chamber . About 18 rursiradiate primary ribs ...
Page 264
... umbilical bullae on the inner whorls , so that about 80 per cent of the preceding whorl is covered , but becoming slightly more evolute as the umbilical seam egresses on the adoral portion of the body chamber . Conse- quently , a short ...
... umbilical bullae on the inner whorls , so that about 80 per cent of the preceding whorl is covered , but becoming slightly more evolute as the umbilical seam egresses on the adoral portion of the body chamber . Conse- quently , a short ...
Page 333
... umbilical bullae . It is a compressed form with a narrow umbilicus and sloping umbilical walls ornamented with 14 radial primaries . These termi- nate in bullae giving rise to generally 4 , fine , prorsiradiate secondaries which ...
... umbilical bullae . It is a compressed form with a narrow umbilicus and sloping umbilical walls ornamented with 14 radial primaries . These termi- nate in bullae giving rise to generally 4 , fine , prorsiradiate secondaries which ...
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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 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 pereiopods 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 SUID-AFRIKAANSE MUSEUM 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 views whorl section