Annals of the South African Museum, Volume 7South African Museum, 1913 - Natual history |
From inside the book
Results 1-5 of 27
Page 172
... umbilical slit . Just below this , and adjacent to the inner lip , the surface of the whorl presents a narrow , slightly flattened space . The height of the aperture is much greater than the breadth . Dimensions.- Height of shell ( 1 ) ...
... umbilical slit . Just below this , and adjacent to the inner lip , the surface of the whorl presents a narrow , slightly flattened space . The height of the aperture is much greater than the breadth . Dimensions.- Height of shell ( 1 ) ...
Page 174
... umbilical slit . Dimensions.- ( 1 ) ( 2 ) Height of the shell 11 12 Height of the body - whorl at the aperture 8 Greatest width of aperture 6 • 8 · ( 3 ) 13 mm . 9 " " 5.5 . 6 " " Occurrence . - Found by Mr. Rogers in the cliff on Buck ...
... umbilical slit . Dimensions.- ( 1 ) ( 2 ) Height of the shell 11 12 Height of the body - whorl at the aperture 8 Greatest width of aperture 6 • 8 · ( 3 ) 13 mm . 9 " " 5.5 . 6 " " Occurrence . - Found by Mr. Rogers in the cliff on Buck ...
Page 179
... umbilical wall is not abruptly marked off from the flank . The whorls have a laterally compressed form , and the flanks show a slightly convex surface . The height of the whorl , measured from the umbilical rim , is greater than the ...
... umbilical wall is not abruptly marked off from the flank . The whorls have a laterally compressed form , and the flanks show a slightly convex surface . The height of the whorl , measured from the umbilical rim , is greater than the ...
Page 180
... umbilical centre to the periphery , there are 12 ribs crowded into a space of 2 mm . at the middle of the flank . There are no constrictions . The course of The siphonal The specimen is imperfect , and is wholly septate . the lobe ...
... umbilical centre to the periphery , there are 12 ribs crowded into a space of 2 mm . at the middle of the flank . There are no constrictions . The course of The siphonal The specimen is imperfect , and is wholly septate . the lobe ...
Page 186
... umbilical wall , there are groups of secondary ribs " which bifurcate higher up and admit of intercalary ribs . " It would perhaps have been more correct to say that bifurcation of the secondary ribs on the flank ( away from the ...
... umbilical wall , there are groups of secondary ribs " which bifurcate higher up and admit of intercalary ribs . " It would perhaps have been more correct to say that bifurcation of the secondary ribs on the flank ( away from the ...
Other editions - View all
Common terms and phrases
Acanthodiscus adult Ammonites angle aperture Aptian Astarte atherstoni Sharpe baini bank of Sunday's bone breadth Broom carinal characters closely Coega collection comparison conocardiiformis convex costate Cutch Cynodonts d'Orbigny developed diameter dorsal elongated Eriphyla escutcheon Exogyra fauna figure flank flattened fossils frontal genus Geol Geological German East Africa Graaff-Reinet groove Hauterivian height herzogi Holcostephanus holubi imbricata Jurassic keel Kitchin Krauss left valve length less Lower Cretaceous Lycett margin Massospondylus narrow Neocomian Neumayr occur Oolitic Oomia beds ornamentation outline Pareiasaurus Pavlow Pecten Plate posterior posteriorly preserved represented resemblance ribs ridges right valve Rogers and Schwarz rogersi sculpture shell similar slightly South African Museum species specimen spiral stage Stoliczka stowi Sunday's River surface suture Tate Tate's transverse Trigonia Trigonia ventricosa tubercles Uhlig Uitenhage Uitenhage beds Uitenhage Series umbilical umbilicus umbo umbonal region upper W. T. Blanford whorl zoarium Zwartkop's River