Annals of the South African Museum, Volume 73The Museum, 1977 - Natual history |
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Page 256
... body chamber may be distinctly uncoiled , giving rise to ancyloceratid or to aspinoceratid forms . Ornament on phragmocone consists of plain ribbing with occasional umbilical or ventral tubercles in early or late stages . On the body ...
... body chamber may be distinctly uncoiled , giving rise to ancyloceratid or to aspinoceratid forms . Ornament on phragmocone consists of plain ribbing with occasional umbilical or ventral tubercles in early or late stages . On the body ...
Page 261
... body chamber , and is hence referred to the Russian species in open nomenclature . The umbilical diameter of the Zululand specimen is intermediate between that of Sinzow's two figured specimens . In the lack of a sudden change of ...
... body chamber , and is hence referred to the Russian species in open nomenclature . The umbilical diameter of the Zululand specimen is intermediate between that of Sinzow's two figured specimens . In the lack of a sudden change of ...
Page 268
... body chamber . On the body chamber of the holotype , of which half a whorl is preserved , twenty - six ribs occur per half whorl . Ribbing on the body chamber is broad and low , with very faint traces of tuberculation on the last few ...
... body chamber . On the body chamber of the holotype , of which half a whorl is preserved , twenty - six ribs occur per half whorl . Ribbing on the body chamber is broad and low , with very faint traces of tuberculation on the last few ...
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Common terms and phrases
abbreviations adcauline adnate Albian Allman Ammonites Ammonoidea Amphipoda Ancyloceras Adouliceras ancyloceratid aperture Aptian Aptian III-IV Australiceras author's name authors Barremian bicuspidata BMNH body chamber cala Campanian Cape Town capensis Casey Cenomanian coiling Collignon constrictions Cretaceous Crioceras crozier described Description distal dorsal dorsum Eoxenopoides reuningi fauna figures flanks fossil Gastropoda genus gonothecae Haughton Helicancyloceras Nonyaniceras Hoepen holotype hydrocladia hydrothecae inner whorls internode Kerguelen Kossmat lateral Lectotype length lobe locality 168 locality 170 Lower Aptian Maastrichtian Madagascar material metres Millard Mozambique mozambiquense nematothecae occur ornament paratypes Pedicel phragmocone pipids Pseudophyllites referred ribs rounded Saghalinites Santonian scientific name segment separated Sertularella seta shaft shoulder Sinzow South African Museum southern Spath species specimen spines Stechow stem subheadings subsimbirskense SUID-AFRIKAANSE MUSEUM suture line Symplectoscyphus Synonymy Tetragonites text-fig Tonohamites Totton Toxoceratoides Tropaeum tubercles umbilical Umzamba Upper Aptian venter ventral Vervoort Wb/Wh whorl section Wiedmann Xenopus Zululand