Annals of the South African Museum, Volume 7, Part 2South African Museum, 1898 - Natural history |
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Page 87
... rounded folds in place of the well - defined narrow rounded ribs in M. baini ; in addition , these folds are themselves ornamented by finer linear markings which pass backwards along them and then curve forward to run parallel to the ...
... rounded folds in place of the well - defined narrow rounded ribs in M. baini ; in addition , these folds are themselves ornamented by finer linear markings which pass backwards along them and then curve forward to run parallel to the ...
Page 169
... rounded nodes of this keel is prolonged in wedge shape downwards into the marginal band , but the apices of the wedges die out before they reach the lower keel . At the end of the fourth whorl the wedge - like ornaments appear to be ...
... rounded nodes of this keel is prolonged in wedge shape downwards into the marginal band , but the apices of the wedges die out before they reach the lower keel . At the end of the fourth whorl the wedge - like ornaments appear to be ...
Page 173
... rounded , transverse ridges and furrows . The spiral angle is about 90 ° . The mouth aperture is broadly rounded below and narrowed and somewhat pointed above . The height of the aper- ture does not greatly exceed the breadth . The ...
... rounded , transverse ridges and furrows . The spiral angle is about 90 ° . The mouth aperture is broadly rounded below and narrowed and somewhat pointed above . The height of the aper- ture does not greatly exceed the breadth . The ...
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Common terms and phrases
Acanthodiscus Ammonites angle anteriorly aperture Aptian Astarte atherstoni Sharpe baini Sharpe bank of Sunday's Belemnites carinal characters closely Coega Coega Valley collection comparison conocardiiformis convex costate Cutch d'Orb d'Orbigny delicate developed Dimensions Dunbrodie elongated Eriphyla escutcheon Exogyra fauna figured flank flattened fossils frontal genus Geol German East Africa Graaff-Reinet groove Hauterivian height herzogi Holcostephanus holubi inflated Jurassic keel Krauss last whorl left valve less Lower Cretaceous Lycett margin Marine Beds Müller narrow Neocomian Neumayr occur Oolitic Oomia beds ornamentation outline Pavlow Pecten posterior posteriorly railway relatively represent resemblance ribs ridges right valve Rogers and Schwarz sculpture shell similar South African Museum Sowerby species specimen spiral Stoliczka stowi strata Sunday's River surface suture Tate Tate's transverse Trigonia Trigonia ventricosa tubercles Uhlig Uitenhage beds Uitenhage Series uitenhagensis sp umbilical umbilicus umbo umbonal region upper W. T. Blanford whorl Zwartkop's River