Annals of the South African Museum, Volume 83The Museum, 1981 - Natual history |
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Page 178
... 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 macroconchs, and to certain microconchs. Whether parabolae are the ...
... 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 macroconchs, and to certain microconchs. Whether parabolae are the ...
Page 182
... inner whorls of the large O. atherstoni macroconch , whilst their microconch forms of O. atherstoni , viz . O. psilostomus Neumayr & Uhlig , O. wilmanae ( Kitchin ) , and O. midas ( Leanza ) , do not possess such features . With regard ...
... inner whorls of the large O. atherstoni macroconch , whilst their microconch forms of O. atherstoni , viz . O. psilostomus Neumayr & Uhlig , O. wilmanae ( Kitchin ) , and O. midas ( Leanza ) , do not possess such features . With regard ...
Page 312
... whorls , involute up to the umbilical bullae on the inner whorls , become rather evolute on the adoral portion of the outer whorl . Distinct primaries begin at the umbilical seam and pass backwards ( rursiradiate ) to 19 bullae on the ...
... whorls , involute up to the umbilical bullae on the inner whorls , become rather evolute on the adoral portion of the outer whorl . Distinct primaries begin at the umbilical seam and pass backwards ( rursiradiate ) to 19 bullae on 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