Annals of the South African Museum, Volume 83The Museum, 1981 - Natual history |
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Page 174
... female are invariably identical to the male dimorph . Douvillé ( 1880 ) , in his study of Morphoceras pseudoanceps , noted that it had inner whorls identical to those of M. polymorphus and suggested that they possibly represented a ...
... female are invariably identical to the male dimorph . Douvillé ( 1880 ) , in his study of Morphoceras pseudoanceps , noted that it had inner whorls identical to those of M. polymorphus and suggested that they possibly represented a ...
Page 176
... female ( spiral form ) characteristics would seem to suggest hermaphroditism . Cope ( 1967 : 53 ) recorded 4 specimens of Pectinatites ( Virgatosphinctoides ) reisiformis densicostatus Cope which he considered to be ' intersexual ...
... female ( spiral form ) characteristics would seem to suggest hermaphroditism . Cope ( 1967 : 53 ) recorded 4 specimens of Pectinatites ( Virgatosphinctoides ) reisiformis densicostatus Cope which he considered to be ' intersexual ...
Page 177
... female . If such a male is removed or isolated it will develop into a female . The presence of a large number of males influences certain of the males to become females . When the individual once becomes female , it remains in that ...
... female . If such a male is removed or isolated it will develop into a female . The presence of a large number of males influences certain of the males to become females . When the individual once becomes female , it remains in that ...
Contents
DECAPOD AND ISOPOD CRUSTACEANS FROM THE WEST COAST | 14 |
Zoogeographic discussion | 29 |
INTRODUCTION | 32 |
Copyright | |
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Common terms and phrases
abbreviated Africa Ammonites Amphipoda antenna Astieria atherstoni Sharpe author's name baini baini baini Sharpe Barnard Baumberger Besairie bicuspidata body chamber Böse Broom Bryden Cape Province Cape Town carapace Coxa Crustacea Decapoda dentary diameter Dicynodon Diictodon dimorphism distal dorsal fauna figures genera genus gnathopod Hauterivian holotype Hout Bay Imlay inflated inner whorls intercalated ribs Kensley Kingoria Kitchin lateral views length lobe macroconch male margin material Maxilla Maxilliped Olcostephanus Olcostephanus Oudenodon outer whorl ovig parabolae Paramelita paratypes peduncle Peponocephala electra Pereopod peristome Pleopod posterior primary ribs prorsiradiate secondaries recorded ribs between bundles Rogersites rostrum Seamount secondary ribs segment setae South African Museum Spath species spines spinules Sternophysinx SUID-AFRIKAANSE MUSEUM Sundays River Sundays River Formation synonym terminal Type specimen Type specimen Skull Uitenhage umbilical bullae umbilical seam umbilical shoulder umbilical tubercles umbilical walls umbilicus Upper Valanginian uropod Valanginian Vema venter ventral views whorl section