Annals of the South African Museum, Volume 75The Museum, 1978 - Natual history |
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Page 100
... ribs , rigid , robust , and totalling 25 on the outer whorl . Main ribs arise from prominent , rounded umbilical tubercles , while all ribs are ornamented with upper and lower ventro - lateral and siphonal clavi . At large diameters the ...
... ribs , rigid , robust , and totalling 25 on the outer whorl . Main ribs arise from prominent , rounded umbilical tubercles , while all ribs are ornamented with upper and lower ventro - lateral and siphonal clavi . At large diameters the ...
Page 116
... ribs in the penultimate whorls and on the body whorls serve to separate the two species . The flat - topped ribs would appear to be a specific specialization not transmitted to any younger known species of the genus . ' Metoicoceras ...
... ribs in the penultimate whorls and on the body whorls serve to separate the two species . The flat - topped ribs would appear to be a specific specialization not transmitted to any younger known species of the genus . ' Metoicoceras ...
Page 119
... ribs , with weak umbilical bullae , between which are 1-2 intercalatories . The ribs are prorsiradiate , and number about 17 ribs per half whorl . All ribs are ornamented with lower ventro - lateral tubercles and upper ventro - lateral ...
... ribs , with weak umbilical bullae , between which are 1-2 intercalatories . The ribs are prorsiradiate , and number about 17 ribs per half whorl . All ribs are ornamented with lower ventro - lateral tubercles and upper ventro - lateral ...
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