Annals of the South African Museum, Volume 7 |
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Page 32
P. imbricata , however , is without radial ornamentation , but is characterised by
well - spaced concentric ridges which recall the similar ornamentation of Anomia
neocomiensis d'Orb . , † though occurring in less emphasised form .
P. imbricata , however , is without radial ornamentation , but is characterised by
well - spaced concentric ridges which recall the similar ornamentation of Anomia
neocomiensis d'Orb . , † though occurring in less emphasised form .
Page 134
The ornamentation , though coarser , with broader and more widely spaced ribs ,
is of essentially the same kind , and there is the deeply cut lunule . It may be
judged from de Loriol's figure of a left valve that a posterior lateral hinge process
is ...
The ornamentation , though coarser , with broader and more widely spaced ribs ,
is of essentially the same kind , and there is the deeply cut lunule . It may be
judged from de Loriol's figure of a left valve that a posterior lateral hinge process
is ...
Page 166
The type of ornamentation is essentially similar as regards major features , and
while Keeping gave no account of the variation of sculptural characters when
traced through successive stages , it seems probable that the central marginal
keel ...
The type of ornamentation is essentially similar as regards major features , and
while Keeping gave no account of the variation of sculptural characters when
traced through successive stages , it seems probable that the central marginal
keel ...
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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 |