Annals of the South African Museum, Volume 73The Museum, 1977 - Natual history |
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Page 158
... flanks and venter . There are five or six collar - like ribs and associated constrictions per whorl in smaller specimens ; adults bear seven to eight , with some crowding on the body chamber . Collars are faint on the flanks , but ...
... flanks and venter . There are five or six collar - like ribs and associated constrictions per whorl in smaller specimens ; adults bear seven to eight , with some crowding on the body chamber . Collars are faint on the flanks , but ...
Page 178
... flank . The umbilicus is shallow , with a low subvertical wall which merges into a rounded shoulder , which in turn grades imperceptibly into the rounded convergent flanks . The venter is broadly rounded . The test is ornamented by very ...
... flank . The umbilicus is shallow , with a low subvertical wall which merges into a rounded shoulder , which in turn grades imperceptibly into the rounded convergent flanks . The venter is broadly rounded . The test is ornamented by very ...
Page 254
... flanks . At the distal end , three stronger trituberculate ribs occur , separated by two intermediary ribs . One pair of tubercles is situated ventrally , the other on the ventral third of the flanks and the third , which is smallest ...
... flanks . At the distal end , three stronger trituberculate ribs occur , separated by two intermediary ribs . One pair of tubercles is situated ventrally , the other on the ventral third of the flanks and the third , which is smallest ...
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Common terms and phrases
abbreviations adcauline adnate Africa Albian Allman Ammonites Ammonoidea Amphipoda Ancyloceras Adouliceras aperture Aptian Australiceras author's name authors bicuspidata BMNH body chamber cala Cape Town Casey Cenomanian coiling Collignon constrictions Cretaceous Crioceras crozier described Description distal dorsal dorsum Eoxenopoides reuningi fauna figures flanks fossil frogs Gastropoda genus geol gonothecae H. L. Clark Haughton Helicancyloceras Hoepen holotype hydrocladia hydroids hydrothecae indra internode italics Kerguelen Kossmat Late Santonian lateral Lectotype length lobe locality Lower Aptian Maastrichtian material metres Millard Mozambique nematothecae occur ornament paratypes Pedicel phragmocone pipids Pondoland Pseudophyllites references ribs rounded Saghalinites Santonian Santonian to early scientific name segments separated Sertularella shaft shoulder Sinzow South African Museum southern Spath species specimens spines Stechow stem subheadings subtimotheanus SUID-AFRIKAANSE MUSEUM suture Symplectoscyphus Synonymy Tetragonites text-fig Tonohamites Totton Toxoceratoides transverse Tropaeum tubercles Upper Aptian venter ventral vertebrae Vervoort Wb/Wh whorl section Wiedmann Xenopus Zool Zululand Zygophylax