Annals of the South African Museum, Volume 83 |
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Page 178
That some macroconchs had parabolae on their earliest whorls is revealed by a gigantic phragmocone of O. rogersi (Kitchin) (Fig. 71 A-D), corresponding to a diameter of approximately 200 mm, which shows the impression on an inner whorl, ...
That some macroconchs had parabolae on their earliest whorls is revealed by a gigantic phragmocone of O. rogersi (Kitchin) (Fig. 71 A-D), corresponding to a diameter of approximately 200 mm, which shows the impression on an inner whorl, ...
Page 182
( = O. baini ¦ ) , a species with prominent parabolae , as merely the inner whorls of the large O. atherstoni macroconch , whilst their microconch forms of O. atherstoni , viz . O. psilostomus Neumayr & Uhlig , O. wilmanae ( Kitchin ) ...
( = O. baini ¦ ) , a species with prominent parabolae , as merely the inner whorls of the large O. atherstoni macroconch , whilst their microconch forms of O. atherstoni , viz . O. psilostomus Neumayr & Uhlig , O. wilmanae ( Kitchin ) ...
Page 312
The whorls , involute up to the umbilical bullae on the inner whorls , become rather evolute on the adoral ... On the outer whorl the bullae become swollen and distinctly rounded and the primaries are effaced ( on the internal mould ) .
The whorls , involute up to the umbilical bullae on the inner whorls , become rather evolute on the adoral ... On the outer whorl the bullae become swollen and distinctly rounded and the primaries are effaced ( on the internal mould ) .
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Common terms and phrases
abbreviations Africa Ammonites appears arise Astieria atherstoni Sharpe authors baini baini Sharpe Barnard Baumberger bearing become body body chamber Broom bundles close collected compressed considered described Description designated diameter Dicynodon differs Diictodon dimorphism distinguished dorsal example Family fauna Feresa figured Formation forms front genus give holotype illustrations Imlay included inflated inner whorls intercalated ribs Kitchin known lacking lateral views length Locality lower macroconch male margin material narrow Neocomian Note Olcostephanus Olcostephanus original outer whorl parabolae Pereopod peristome portion posterior present primaries prominent recorded references represent Rogersites rostrum rounded rursiradiate secondary ribs segment separates Sharpe short shows similar single Skull slightly Smith South African Museum Spath species spines stage strongly Sundays River tables terminate tubercles Type specimen umbilical bullae umbilical shoulder umbilicus Upper Valanginian Vema venter ventral whorl section Zone
Bibliographic information
| Title | Annals of the South African Museum, Volume 83 Annals of the South African Museum, South African Museum Volume 83 of Annals of the South African Museum: Annale Van Die Suid-Afrikaanse Museum, South African Museum |
| Author | South African Museum |
| Publisher | The Museum, 1981 |
| Original from | the University of California |
| Digitized | 9 Dec 2009 |
| ISBN | 0868130060, 9780868130064 |
| Export Citation | BiBTeX EndNote RefMan |