Annals of the South African Museum, Volume 83The Museum, 1981 - Natual history |
From inside the book
Results 1-3 of 14
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 seam at this stage . The whorls are rather inflated , with a depressed whorl section , the latter tending to become coronate as the umbilical seam egresses . Prominent primary ribs begin at the umbilical seam and curve ...
... umbilical seam at this stage . The whorls are rather inflated , with a depressed whorl section , the latter tending to become coronate as the umbilical seam egresses . Prominent primary ribs begin at the umbilical seam and curve ...
Page 307
... umbilical bullae except on the last two - thirds of the body chamber when the umbilical seam egresses rapidly and the final whorl becomes about 30 per cent evolute at the peristome . The umbilicus is fairly narrow and rather deep , with ...
... umbilical bullae except on the last two - thirds of the body chamber when the umbilical seam egresses rapidly and the final whorl becomes about 30 per cent evolute at the peristome . The umbilicus is fairly narrow and rather deep , with ...
Other editions - View all
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