Annals of the South African Museum, Volume 83The Museum, 1981 - Natual history |
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Page 178
... diameter of approximately 200 mm, which shows the impression on an inner whorl, corresponding to a diameter of about 60 mm, of a prominent parabola. Parabolae would seem, therefore, to be restricted to the inner whorls of certain ...
... diameter of approximately 200 mm, which shows the impression on an inner whorl, corresponding to a diameter of about 60 mm, of a prominent parabola. Parabolae would seem, therefore, to be restricted to the inner whorls of certain ...
Page 192
... diameter ) , strongly inflated , with well - rounded venter and depressed , semicircular whorl section . Primary ribs rursiradiate , terminating in 17-25 bullae at the umbilical shoulder from which arise bundles of 3-4 secondaries ...
... diameter ) , strongly inflated , with well - rounded venter and depressed , semicircular whorl section . Primary ribs rursiradiate , terminating in 17-25 bullae at the umbilical shoulder from which arise bundles of 3-4 secondaries ...
Page 267
... diameter ( PEM - 1468 / 79 ) there are 24 secondaries per 6 bullae , and 9 ribs within a 50 mm distance along the venter . In the same specimen at 210 mm diameter there are 21 secondaries per 4 bullae , with a rib spacing of 7 mm . The ...
... diameter ( PEM - 1468 / 79 ) there are 24 secondaries per 6 bullae , and 9 ribs within a 50 mm distance along the venter . In the same specimen at 210 mm diameter there are 21 secondaries per 4 bullae , with a rib spacing of 7 mm . The ...
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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