Annals of the South African Museum, Volume 83The Museum, 1981 - Natual history |
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Page 173
... prominent primary ribs . Ventral tubercles ( ? dimorphic ) may be present on the body chamber . Age : Upper Valanginian . Jeanthieuloyites . Similar to Olcostephanus , but with long , radial , nontuberculate primaries extending to mid ...
... prominent primary ribs . Ventral tubercles ( ? dimorphic ) may be present on the body chamber . Age : Upper Valanginian . Jeanthieuloyites . Similar to Olcostephanus , but with long , radial , nontuberculate primaries extending to mid ...
Page 192
... prominent ribs , the adapical one of which is prominently flared . The adoral rib is provided with well - developed , slightly converging lateral lappets . There are between 8-10 secondaries per 3 bullae on the final whorl with between ...
... prominent ribs , the adapical one of which is prominently flared . The adoral rib is provided with well - developed , slightly converging lateral lappets . There are between 8-10 secondaries per 3 bullae on the final whorl with between ...
Page 345
... prominent constrictions . The ribbing is of two types , simple ribs lacking tubercles and stronger ribs which bifurcate or trifurcate from a prominent lateral tubercle and also have umbilical tubercles . All ribs bear weak ventrolateral ...
... prominent constrictions . The ribbing is of two types , simple ribs lacking tubercles and stronger ribs which bifurcate or trifurcate from a prominent lateral tubercle and also have umbilical tubercles . All ribs bear weak ventrolateral ...
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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 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 pereiopods 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 SUID-AFRIKAANSE MUSEUM 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 views whorl section