Annals of the South African Museum, Volume 83The Museum, 1981 - Natual history |
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Page 176
... forms , completely different from the spiral in the small forms . Hence , they should be regarded as large forms whose growth halted at the stage with about 6 whorls . ' Makowski ( 1962a ) makes no mention of whether he is dealing with ...
... forms , completely different from the spiral in the small forms . Hence , they should be regarded as large forms whose growth halted at the stage with about 6 whorls . ' Makowski ( 1962a ) makes no mention of whether he is dealing with ...
Page 181
... forms ( macroconchs ) whose last whorls and particularly the last body chamber are identical , while their young forms differ in section or in character of ornamentation . These differences , being not very striking , are not taken into ...
... forms ( macroconchs ) whose last whorls and particularly the last body chamber are identical , while their young forms differ in section or in character of ornamentation . These differences , being not very striking , are not taken into ...
Page 182
... forms which thus do not constitute a true species but are merely homoeomorphous local variants of the common root - stock ' ( Spath 1930 : 34 ) . This convergence is very evident in the macroconch forms of the Uitenhage olcostephanid ...
... forms which thus do not constitute a true species but are merely homoeomorphous local variants of the common root - stock ' ( Spath 1930 : 34 ) . This convergence is very evident in the macroconch forms of the Uitenhage olcostephanid ...
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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