Annals of the South African Museum, Volume 7, Part 2South African Museum, 1898 - Natural history |
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Page 99
... slopes down gradually , forming a long , almost straight outline , and passes by a rather abrupt curve into the short , convex posterior border . In front of the umbo the valve margin falls steeply at once to form the lengthy frontal ...
... slopes down gradually , forming a long , almost straight outline , and passes by a rather abrupt curve into the short , convex posterior border . In front of the umbo the valve margin falls steeply at once to form the lengthy frontal ...
Page 137
... slopes down gradually , giving a very slightly concave outline . It has an angular junction with the siphonal margin . The ... slope and straight outline , passing then by a curve into the convex anterior margin . This in turn passes by ...
... slopes down gradually , giving a very slightly concave outline . It has an angular junction with the siphonal margin . The ... slope and straight outline , passing then by a curve into the convex anterior margin . This in turn passes by ...
Page 212
... slope than the first lateral keel when traced forwards from the cervical groove . The surface between the keels is ... slopes backward rather obliquely in its general course when traced upwards . In relation to the slenderly formed ...
... slope than the first lateral keel when traced forwards from the cervical groove . The surface between the keels is ... slopes backward rather obliquely in its general course when traced upwards . In relation to the slenderly formed ...
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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