Annals of the South African Museum, Volume 7South African Museum, 1913 - Natual history |
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Page 17
... grooves . This species resembles P. valida ( Stoliczka ) * from the Ariyalur Group ( Senonian ) of Southern India , * Cret . Fauna S. India , vol . iii . ( 1871 ) , p . 409 , pl . xxii . , fig . 1 . and also P. cereviciana , Pethö ...
... grooves . This species resembles P. valida ( Stoliczka ) * from the Ariyalur Group ( Senonian ) of Southern India , * Cret . Fauna S. India , vol . iii . ( 1871 ) , p . 409 , pl . xxii . , fig . 1 . and also P. cereviciana , Pethö ...
Page 18
... grooves are less numerous and more widely separated than in P. cereviciana , but FIG . 6. - Perna , sp . Internal cast . A considerable portion of the posterior part of the shell appears to be missing . x . Die Kreide- ( Hypersenon ...
... grooves are less numerous and more widely separated than in P. cereviciana , but FIG . 6. - Perna , sp . Internal cast . A considerable portion of the posterior part of the shell appears to be missing . x . Die Kreide- ( Hypersenon ...
Page 67
... grooves may almost cross the rib , but for the most part the margin of the rib which is nearest to the middle line of the valve is straight and entire . Another peculiarity of the ornamentation is seen in some cases in the manner in ...
... grooves may almost cross the rib , but for the most part the margin of the rib which is nearest to the middle line of the valve is straight and entire . Another peculiarity of the ornamentation is seen in some cases in the manner in ...
Page 69
... grooves , but says that this stands in connection with the crossing of lines of growth - a relation not to be observed in the minute ornamentation of P. projectus . SUB - GENUS CHLAMYS J. F. Bolten . PECTEN ( CHLAMYS ) cf. SUBACUTUS ...
... grooves , but says that this stands in connection with the crossing of lines of growth - a relation not to be observed in the minute ornamentation of P. projectus . SUB - GENUS CHLAMYS J. F. Bolten . PECTEN ( CHLAMYS ) cf. SUBACUTUS ...
Page 70
... grooves of accretion . The hinge - line and ears are unfortunately not preserved , but having regard to the other characters there is no reason to suppose that they differed essentially from those of P. subacutus . Dimensions . - Height ...
... grooves of accretion . The hinge - line and ears are unfortunately not preserved , but having regard to the other characters there is no reason to suppose that they differed essentially from those of P. subacutus . Dimensions . - Height ...
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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