Annals of the South African Museum, Volume 73The Museum, 1977 - Natual history |
From inside the book
Results 1-3 of 19
Page 153
... constrictions , fourteen or fifteen on the outer whorl , each preceded by a fine , low , rounded collar . The constrictions are narrow and quite deeply incised ; they arise at the umbilical seam , pass straight up the umbilical wall ...
... constrictions , fourteen or fifteen on the outer whorl , each preceded by a fine , low , rounded collar . The constrictions are narrow and quite deeply incised ; they arise at the umbilical seam , pass straight up the umbilical wall ...
Page 171
... constrictions . The constrictions arise at the umbilical seam , pass straight up the umbilical wall , and straight across the inner flanks in a markedly prorsiradiate direction , flexing gently backwards across the upper flank and ...
... constrictions . The constrictions arise at the umbilical seam , pass straight up the umbilical wall , and straight across the inner flanks in a markedly prorsiradiate direction , flexing gently backwards across the upper flank and ...
Page 180
... constrictions become more closely spaced as diameter increases . Saghalinites nuperus is thus readily separated from S. cala and S. wrighti , both these species developing a polygonal whorl section at large diameters . The constrictions ...
... constrictions become more closely spaced as diameter increases . Saghalinites nuperus is thus readily separated from S. cala and S. wrighti , both these species developing a polygonal whorl section at large diameters . The constrictions ...
Other editions - View all
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