Annals of the South African Museum, Volume 83The Museum, 1981 - Natual history |
From inside the book
Results 1-3 of 31
Page 206
... arise 2-3 slightly prorsiradiate secondaries . Parabolae are lacking . This species seems to differ from O. atherstoni in the shape of the whorl section , and in being less inflated . It closely approaches O. andartae Thieuloy . Fig ...
... arise 2-3 slightly prorsiradiate secondaries . Parabolae are lacking . This species seems to differ from O. atherstoni in the shape of the whorl section , and in being less inflated . It closely approaches O. andartae Thieuloy . Fig ...
Page 260
... arise from the umbilical shoulder ( the umbilicus is plugged with matrix ) and almost invariably bifurcate above midflank , although the occasional rib remains single . There are five prominent oblique parabolae on the outer whorl ...
... arise from the umbilical shoulder ( the umbilicus is plugged with matrix ) and almost invariably bifurcate above midflank , although the occasional rib remains single . There are five prominent oblique parabolae on the outer whorl ...
Page 264
... 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 Microconch ( 5 ) : the shell is ...
... 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 Microconch ( 5 ) : the shell is ...
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 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