Annals of the South African Museum, Volume 83The Museum, 1981 - Natual history |
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Page 245
... venter . Between 18 and 22 pro- minent umbilical bullae on the final whorl give rise to 4-5 radial to prorsiradiate , fine , flexuous , secondary ribs , occasionally bifurcating or with intercalatories , and with 2-5 intercalated ribs ...
... venter . Between 18 and 22 pro- minent umbilical bullae on the final whorl give rise to 4-5 radial to prorsiradiate , fine , flexuous , secondary ribs , occasionally bifurcating or with intercalatories , and with 2-5 intercalated ribs ...
Page 290
... venter . The whorls are involute up to the umbilical bullae , covering about 80 per cent of the preceding whorl ... venter transversely . There may be a slight adorally concave inflexion where the ribbing crosses the siphonal line ...
... venter . The whorls are involute up to the umbilical bullae , covering about 80 per cent of the preceding whorl ... venter transversely . There may be a slight adorally concave inflexion where the ribbing crosses the siphonal line ...
Page 351
... venter . Between main ribs are 2-4 intercalated ribs which are prominent only across the venter . The tuberculation on the ribbing is rather variable and asymmetrical . There may be umbilical , lateral , ventrolateral and siphonal ...
... venter . Between main ribs are 2-4 intercalated ribs which are prominent only across the venter . The tuberculation on the ribbing is rather variable and asymmetrical . There may be umbilical , lateral , ventrolateral and siphonal ...
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