Annals of the South African MuseumThe Museum, 1991 - Natural history |
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Page 9
... Valanginian of south - east Africa , where it is an uncommon element of the faunas . Suborder MYOPHORELLINA nov . Discussion This monophyletic suborder is here held to comprise the superfamilies Myo- phorellacea and Megatrigoniacea ...
... Valanginian of south - east Africa , where it is an uncommon element of the faunas . Suborder MYOPHORELLINA nov . Discussion This monophyletic suborder is here held to comprise the superfamilies Myo- phorellacea and Megatrigoniacea ...
Page 33
... Valanginian of the Algoa Basin , where it is a very rare component of the faunas . Pterotrigonia rogersi ( Kitchin , 1908 ) Figs 19-20 Trigonia rogersi Kitchin , 1908 : 99 , pl . 3 ( fig . 3 ) , pl . 4 ( fig . 1 ) , pl . 5 ( fig . 2 ) ...
... Valanginian of the Algoa Basin , where it is a very rare component of the faunas . Pterotrigonia rogersi ( Kitchin , 1908 ) Figs 19-20 Trigonia rogersi Kitchin , 1908 : 99 , pl . 3 ( fig . 3 ) , pl . 4 ( fig . 1 ) , pl . 5 ( fig . 2 ) ...
Page 41
... Valanginian of south - east Africa . It questionably also occurs in the Tithonian of India ( Cutch ) and East Africa ( Tanzania ) . Pisotrigonia kraussi ( Kitchin , 1908 ) Figs 15D , 23 Lyrodon ventricosus Krauss , 1850 , pl . 2 ( fig ...
... Valanginian of south - east Africa . It questionably also occurs in the Tithonian of India ( Cutch ) and East Africa ( Tanzania ) . Pisotrigonia kraussi ( Kitchin , 1908 ) Figs 15D , 23 Lyrodon ventricosus Krauss , 1850 , pl . 2 ( fig ...
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Common terms and phrases
Algoa Basin Anditrigonia antecarinal sulcus anterior commissure anterolateral shoulder anteroventrally Apiotrigoniinae Bivalvia broad chevrons coarse commissure comprises convex Cooper Cretaceous Description Shell Diagnosis elongate escutcheon carina faunas finely crenulated flank costae flank ornament genus growth rugae growth striae Hauterivian Hoepen holotype inflated anteriorly interspaces Iotrigonia irregular Kobayashi kraussi Kitchin lanceolate large maximum length Lateral view lectotype left valve longitudinal groove Megatrigoniacea moderately Myophorella Myophoriidae Nakano neotype nepionic stages Neumayr nodate Nototrigoniinae opisthogyrous beaks Paranditrigonia paratypes persisting to maturity phyletic Port Elizabeth Museum posterior set posterodorsal margin Poulton Pterotrigonia radial costellae radial ornament Rennie respiratory margin Reyes ribs right valve rostrate shallowly concave shell length Skwarko smooth South African Museum Steinmanella herzogi Goldfuss straight strongly oblique subconcentric subfamily Sundays River Superfamily synonymy Tashiro Tithonian transverse costellae transverse ornament Trigonia Trigoniacea Trigoniinae trigonioid tubercles Type species Upper Valanginian V-shaped Valanginian vau Sharpe ventral margin ventricosa Krauss Yaadia