Annals of the South African Museum, Volume 83The Museum, 1981 - Natual history |
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Page 2
... differs from other congrogadid genera in a combination of characters . The following three characters , taken together , will distinguish the genus from all other described congrogadids : pelvic fin of one spine and two rays ( 1,2 ) ...
... differs from other congrogadid genera in a combination of characters . The following three characters , taken together , will distinguish the genus from all other described congrogadids : pelvic fin of one spine and two rays ( 1,2 ) ...
Page 208
... differs from that of O. atherstoni in being smaller with somewhat fewer secondary ribs per whorl , and in possessing parabolae . The O. baini var . sphaeroidalis ( Spath ) microconch ( Figs 145-146 , 149 ) differs from O. atherstoni ( 3 ) ...
... differs from that of O. atherstoni in being smaller with somewhat fewer secondary ribs per whorl , and in possessing parabolae . The O. baini var . sphaeroidalis ( Spath ) microconch ( Figs 145-146 , 149 ) differs from O. atherstoni ( 3 ) ...
Page 256
... differs from the present material in its much finer ribbing , more numerous umbilical bullae and the absence of parabolae . Whiteaves ( 1893 ) introduced the species Olcostephanus ( Astieria ) deansii ( Fig . 106 ) for a compressed form ...
... differs from the present material in its much finer ribbing , more numerous umbilical bullae and the absence of parabolae . Whiteaves ( 1893 ) introduced the species Olcostephanus ( Astieria ) deansii ( Fig . 106 ) for a compressed form ...
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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