Annals of the South African Museum, Volume 75The Museum, 1978 - Natual history |
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Page 107
... ventro - lateral septate spines . Upper ventro - lateral spines or clavi more numerous than lower ventro - lateral spines . Ribbing projected strongly forwards on the venter so as to meet the serrated siphonal keel at an acute angle ...
... ventro - lateral septate spines . Upper ventro - lateral spines or clavi more numerous than lower ventro - lateral spines . Ribbing projected strongly forwards on the venter so as to meet the serrated siphonal keel at an acute angle ...
Page 115
... ventro - lateral clavi , although the latter become obsolete on the body chamber ; the narrow venter remains tabulate on the body chamber , while the upper ventro - lateral clavi remain strong through- out ontogeny . Metoicoceras ...
... ventro - lateral clavi , although the latter become obsolete on the body chamber ; the narrow venter remains tabulate on the body chamber , while the upper ventro - lateral clavi remain strong through- out ontogeny . Metoicoceras ...
Page 120
... ventro - lateral and siphonal tubercles as in Neocardioceras , but siphonal row soon lost ; later , venter may be concave between rows of ventro - lateral clavi or rounded , with ribs passing over in chevrons ; ornament usually coarsens ...
... ventro - lateral and siphonal tubercles as in Neocardioceras , but siphonal row soon lost ; later , venter may be concave between rows of ventro - lateral clavi or rounded , with ribs passing over in chevrons ; ornament usually coarsens ...
Contents
BARNARD J L | 40 |
Province were first reported by Singer Hooijer 1958 The specimen described | 84 |
BEST P B see Ross J | 147 |
Copyright | |
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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 carapace Carapace Fig carina carpus Cenomanian cephalothorax Cobban & Scott Collignon coloradoense crabeater seal diameter 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 paratypes Peduncle of uropod pereiopod 1 Fig pleopods plumose setae Pseudocalycoceras pseudorostral lobes Puzosia rest of limb rounded 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