Annals of the South African Museum, Volume 83The Museum, 1981 - Natual history |
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Page 158
... growth stages . Description A small , slowly expanding Bochianites , with an initially circular whorl section , becoming elliptical with age . Ornament comprises fine , prorsiradiate lirae , arching across the siphonal line and straight ...
... growth stages . Description A small , slowly expanding Bochianites , with an initially circular whorl section , becoming elliptical with age . Ornament comprises fine , prorsiradiate lirae , arching across the siphonal line and straight ...
Page 176
... growth stages of large forms and provided with small broad lappets . However , the spiral pattern followed is that ... growth halted at the stage with about 6 whorls . ' Makowski ( 1962a ) makes no mention of whether he is dealing with a ...
... growth stages of large forms and provided with small broad lappets . However , the spiral pattern followed is that ... growth halted at the stage with about 6 whorls . ' Makowski ( 1962a ) makes no mention of whether he is dealing with a ...
Page 267
... growth stages . The secondary ribbing is slightly flexuous , recurving on the flanks so as to cross the venter ... growth stage at which parabolae ceased to be produced varies from individual to individual , although it would generally ...
... growth stages . The secondary ribbing is slightly flexuous , recurving on the flanks so as to cross the venter ... growth stage at which parabolae ceased to be produced varies from individual to individual , although it would generally ...
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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