Annals of the South African Museum, Volume 7 |
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subgenus of Crisina , from which it differs in possessing a simple median series
of apertures on the obverse face . The fact that it is not always easy to distinguish
this series as composed of apertures distinct from the most median apertures of ...
subgenus of Crisina , from which it differs in possessing a simple median series
of apertures on the obverse face . The fact that it is not always easy to distinguish
this series as composed of apertures distinct from the most median apertures of ...
Page 9
Entalophora Pergensi , Gregory , * which the above definition would also include
, has thinner branches and the apertures still further apart than in E. virgula . This
is the commonest species of Cretaceous Entalophora and has been found in ...
Entalophora Pergensi , Gregory , * which the above definition would also include
, has thinner branches and the apertures still further apart than in E. virgula . This
is the commonest species of Cretaceous Entalophora and has been found in ...
Page 10
and the apertures less regularly arranged . The peristomes , too , are higher ; but
in the three specimens of this species among the material here described the
peristomes are worn . Distribution . Cenomanian to Danian . ENTALOPHORA ...
and the apertures less regularly arranged . The peristomes , too , are higher ; but
in the three specimens of this species among the material here described the
peristomes are worn . Distribution . Cenomanian to Danian . ENTALOPHORA ...
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Contents
ExogyRA | 25 |
extoni Cleithrolepis S Woodward 264 | 31 |
baini Mytilus Sharpe | 33 |
8 other sections not shown
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Common terms and phrases
adult African angle anterior apertures appears atherstoni baini Band becomes beds bone border Broom characters closely collection comparable comparison considerably convex Cretaceous curved d'Orbigny described developed diameter differs direction distinct distinguished dorsal doubt elongated evidence fauna figure flank fossils front frontal further genus Geol greater greatest half height Holcostephanus individual Jurassic known lateral length less lower margin marked measures middle Museum narrow Neocomian obtained occur Oomia ornamentation outline passes Plate portion posterior present preserved probably prominent referred regarded region relatively remarks represented resemblance ribs ridges Rogers rounded sculpture seems seen separated Sharpe shell shown shows side similar single slightly South African species specimen stage Sunday's River surface Tate traced Trigonia tubercles Uitenhage umbilical umbo umbonal upper valve whorl
Bibliographic information
| Title | Annals of the South African Museum, Volume 7 Annals of the South African Museum, South African Museum |
| Author | South African Museum |
| Publisher | South African Museum, 1913 |
| Original from | University of Minnesota |
| Digitized | 4 Oct 2013 |
| Export Citation | BiBTeX EndNote RefMan |