Annals of the South African Museum, Volume 83The Museum, 1981 - Natual history |
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Page 243
South African Museum. LM On the adoral one - quarter of the outer whorl there is already a distinct egression of the umbilical seam , so that a short distance of secondary ribbing is visible on at least the penultimate whorl . Primary ...
South African Museum. LM On the adoral one - quarter of the outer whorl there is already a distinct egression of the umbilical seam , so that a short distance of secondary ribbing is visible on at least the penultimate whorl . Primary ...
Page 302
... outer whorl ( about 65 mm diameter ) and 24 per 6 bullae on the adoral portion . There are invariably 1-2 intercalated ribs between bundles , with 11 secondaries within a 30 mm distance along the venter of the outer whorl . The outer whorl ...
... outer whorl ( about 65 mm diameter ) and 24 per 6 bullae on the adoral portion . There are invariably 1-2 intercalated ribs between bundles , with 11 secondaries within a 30 mm distance along the venter of the outer whorl . The outer whorl ...
Page 345
... outer whorl covering slightly more than half of the preceding whorl . Maximum width is at mid - flank . The umbilical wall is gently sloping , with a well - rounded umbilical shoulder . Measurements No. BM - C32197 On the outer whorl ...
... outer whorl covering slightly more than half of the preceding whorl . Maximum width is at mid - flank . The umbilical wall is gently sloping , with a well - rounded umbilical shoulder . Measurements No. BM - C32197 On the outer whorl ...
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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