Annals of the South African Museum, Volume 83The Museum, 1981 - Natual history |
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Page 147
... dimorphism in ammonites Sexual dimorphism in Olcostephanus The peristome in Olcostephanus Homoeomorphy in Olcostephanus Description of the Sundays River species of Olc Genus Neohoploceras Genus Distoloceras Genus Eodesmoceras Genus ...
... dimorphism in ammonites Sexual dimorphism in Olcostephanus The peristome in Olcostephanus Homoeomorphy in Olcostephanus Description of the Sundays River species of Olc Genus Neohoploceras Genus Distoloceras Genus Eodesmoceras Genus ...
Page 173
... Dimorphic ; males small , with lappets , females large and with simple peristomes . Age : ValanginianMiddle Hauterivian . O. ( Subastieria ) ... DIMORPHISM IN AMMONITES It has long been noted that REVISION OF LATE VALANGINIAN CEPHALOPODA 173.
... Dimorphic ; males small , with lappets , females large and with simple peristomes . Age : ValanginianMiddle Hauterivian . O. ( Subastieria ) ... DIMORPHISM IN AMMONITES It has long been noted that REVISION OF LATE VALANGINIAN CEPHALOPODA 173.
Page 176
... dimorphism , i.e. microconchs have 5-6 whorls and macroconchs at least 7 , with a morphological hiatus of one whorl between the two dimorphs . However , of the 21 specimens studied , Makowski noted that 3 examples had ' . . . 61 whorls ...
... dimorphism , i.e. microconchs have 5-6 whorls and macroconchs at least 7 , with a morphological hiatus of one whorl between the two dimorphs . However , of the 21 specimens studied , Makowski noted that 3 examples had ' . . . 61 whorls ...
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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