Annals of the South African Museum, Volume 75The Museum, 1978 - Natual history |
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Page 98
... diameter , whereas in SAM - PCA2767 they are still absent at 28 mm diameter , whilst the latter also shows no signs of umbilical tubercles at the same stage . In SAM - PCA2772 ( Fig . 26G ) , at about the same diameter , the umbilical ...
... diameter , whereas in SAM - PCA2767 they are still absent at 28 mm diameter , whilst the latter also shows no signs of umbilical tubercles at the same stage . In SAM - PCA2772 ( Fig . 26G ) , at about the same diameter , the umbilical ...
Page 115
... diameter of 45 mm when the lower ventro - lateral tubercles become obsolete . At about 110 mm diameter the upper ventro - lateral clavi are lost and the venter becomes rounded . Also at this stage the ribs coarsen and become more robust ...
... diameter of 45 mm when the lower ventro - lateral tubercles become obsolete . At about 110 mm diameter the upper ventro - lateral clavi are lost and the venter becomes rounded . Also at this stage the ribs coarsen and become more robust ...
Page 123
... diameter of 48 mm there are 41 ribs per whorl , with only 19 arising from bullae on the umbilical shoulder . These bullae are rather prominent to a diameter of 38 mm , after which they weaken considerably . Between each main rib there ...
... diameter of 48 mm there are 41 ribs per whorl , with only 19 arising from bullae on the umbilical shoulder . These bullae are rather prominent to a diameter of 38 mm , after which they weaken considerably . Between each main rib there ...
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Common terms and phrases
1-segmented abdominal somites accessory flagellum Adult male aesthetascs Africa Ammonites Antenna 1 Fig antennal notch anterolateral angle Basis of maxilliped basis of pereiopod Bodotria body chamber Calycoceras Cape carapace Carapace Fig carina carpus Cenomanian Cobban & Scott Collignon crabeater seal Cumacea diameter DIEGO Dorsal view endopod eyelobe fauna flagellum flanks genus geol half length holotype inner edge Integument Iphinoe ischium Kanabiceras lateral carina Lateral view long as deep lower ventro-lateral tubercles Matsumoto maxilliped maxilliped 3 Fig merus merus and carpus Metoicoceras Moreman outer whorl Ovigerous female paratype Peduncle of uropod pereiopod 1 Fig pleopods plumose setae Pseudocalycoceras pseudorostral lobes Puzosia rest of limb Sciponoceras Second pedigerous somite segment of exopod serrate setae shorter sideplates slightly longer South African Museum Spath specimens spines on inner stout subequal in length Thomel Turonian twice length Type species umbilicus uropod Vascoceras venter ventral view of carapace Watinoceras whorl section