Annals of the South African Museum, Volume 73The Museum, 1977 - Natual history |
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Page 153
... rounded , the flanks flattened and subparallel , the ventrolateral shoulders abruptly rounded , the venter broad and flattened . The surface of the shell ( Figs 1A - C , 2B ) bears fine growth striae and strong , flexuous prorsiradiate ...
... rounded , the flanks flattened and subparallel , the ventrolateral shoulders abruptly rounded , the venter broad and flattened . The surface of the shell ( Figs 1A - C , 2B ) bears fine growth striae and strong , flexuous prorsiradiate ...
Page 158
... rounded . The flanks are distinctly flattened and convergent , the ventro- lateral shoulder abruptly rounded , and the venter broad and flattened . The shell surface is finely striate . These striae pass straight across the umbilical ...
... rounded . The flanks are distinctly flattened and convergent , the ventro- lateral shoulder abruptly rounded , and the venter broad and flattened . The shell surface is finely striate . These striae pass straight across the umbilical ...
Page 178
... rounded shoulder , which in turn grades imperceptibly into the rounded convergent flanks . The venter is broadly rounded . The test is ornamented by very fine , dense striae which arise at the umbilical seam , run at first normal to the ...
... rounded shoulder , which in turn grades imperceptibly into the rounded convergent flanks . The venter is broadly rounded . The test is ornamented by very fine , dense striae which arise at the umbilical seam , run at first normal to the ...
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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