Annals of the South African Museum: Annale Van Die Suid-Afrikaanse Museum |
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Strong , distant , narrow ribs are straight and prorsiradiate on the inner flank . They flex back and thicken across the mid - flank , where they are convex , flex forwards and are concave on the outer flank , and strengthen into blunt ...
Strong , distant , narrow ribs are straight and prorsiradiate on the inner flank . They flex back and thicken across the mid - flank , where they are convex , flex forwards and are concave on the outer flank , and strengthen into blunt ...
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9 figs abbreviations Abstract according acknowledges adult africanum Alopecoceras AMMONOIDEA ANNALS appear argentinense Stanton arrangement Austral Basin author's name authors bicuspidata body chamber broad Cape Town capital caption chronological cited Colchidites Zone Collections comma described designated diameter dimensions Discussion Examples Family FAUNAS Favre figures flank flattened followed genus give given Hatchericeras patagonense Stanton Hauterivian Holotype illustrations included indicated initial internal italics journal Kennedy & Klinger Leanza Leda letters lobe locality 170 material Mollusca Neocomitinae Note original Ornament OUM KX outer flank Oxford paratypes parentheses patagonense Zone Patagonian Perisphinctaceae photographs placed prorsiradiate Pseudohatchericeras publication published pueyrrydonense punctuation reduction references regarded ribs Riccardi Roman scientific name seems separates shouldered Smith South African Museum specimen Spruit subheadings Suture synonym type species umbilical umbilicus University venter volume whorl Woods Wright Zululand