Annals of the South African Museum, Volume 83The Museum, 1981 - Natual history |
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Page 192
... secondary ribs arise , generally with an intercalated rib between bundles . The coarse secondaries are prorsiradiate , recurving slightly so as to cross the venter transversely . There may be a slight inflexion of the secondaries as ...
... secondary ribs arise , generally with an intercalated rib between bundles . The coarse secondaries are prorsiradiate , recurving slightly so as to cross the venter transversely . There may be a slight inflexion of the secondaries as ...
Page 264
... prorsiradiate secondaries , frequently with an intercalated rib between bundles . Where there are three secondaries per bundle the intercalated rib is usually absent . Often a rib which is seen to arise from a bulla on the one flank is ...
... prorsiradiate secondaries , frequently with an intercalated rib between bundles . Where there are three secondaries per bundle the intercalated rib is usually absent . Often a rib which is seen to arise from a bulla on the one flank is ...
Page 333
... secondary ribs . Olcostephanus subfilosus Spath ( Fig . 186 ) is based upon a nucleus which bears parabolae and displays about 16 umbilical bullae from which arise numerous fine , prorsiradiate secondaries , with intercalated ribs ...
... secondary ribs . Olcostephanus subfilosus Spath ( Fig . 186 ) is based upon a nucleus which bears parabolae and displays about 16 umbilical bullae from which arise numerous fine , prorsiradiate secondaries , with intercalated ribs ...
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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