Annals of the South African Museum, Volume 83The Museum, 1981 - Natual history |
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Page 173
... Body chamber high - whorled , compressed , with slightly sinuous , broad , flat - topped ribs and no umbilical tubercles , Age : Lower Hauterivian . O. ( Jeannoticeras ) . Similar to O. ( Parastieria ) from which it is doubtfully ...
... Body chamber high - whorled , compressed , with slightly sinuous , broad , flat - topped ribs and no umbilical tubercles , Age : Lower Hauterivian . O. ( Jeannoticeras ) . Similar to O. ( Parastieria ) from which it is doubtfully ...
Page 264
... body chamber , from which arise bundles of 3-5 prorsiradiate secondaries , with 1-2 intercalatories between bundles . Parabolae present on inner whorls only . Inflation decreases on adoral portion of the body chamber . Description ...
... body chamber , from which arise bundles of 3-5 prorsiradiate secondaries , with 1-2 intercalatories between bundles . Parabolae present on inner whorls only . Inflation decreases on adoral portion of the body chamber . Description ...
Page 307
... 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 vertical umbilical walls on the inner whorls and an ...
... 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 vertical umbilical walls on the inner whorls and an ...
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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