Annals of the South African Museum, Volume 73The Museum, 1977 - Natual history |
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Page 268
... Ornament on the early whorls consists of delicate , thin ribs , separated by wider interspaces . The ribs are straight to sinuous on the flanks and cross the dorsum and venter with a forward curvature . Rib density is c . 100 at a ...
... Ornament on the early whorls consists of delicate , thin ribs , separated by wider interspaces . The ribs are straight to sinuous on the flanks and cross the dorsum and venter with a forward curvature . Rib density is c . 100 at a ...
Page 318
... ornament consists of single , simple ribs , slightly prorsiradiate and separated by interspaces of similar width ... Ornament remains more or less constant up to the sharply recurved crozier . In the bend of the crozier more intercalated ...
... ornament consists of single , simple ribs , slightly prorsiradiate and separated by interspaces of similar width ... Ornament remains more or less constant up to the sharply recurved crozier . In the bend of the crozier more intercalated ...
Page 340
... ornament over the venter , but does not appear to have been helically coiled . BMNH C79693 is also only slightly ... ornament consists of narrow , rounded radial ribs , separated by interspaces of similar width , each bearing a pair of ...
... ornament over the venter , but does not appear to have been helically coiled . BMNH C79693 is also only slightly ... ornament consists of narrow , rounded radial ribs , separated by interspaces of similar width , each bearing a pair of ...
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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