Annals of the South African MuseumThe Museum, 1991 - Natural history |
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Page 1
... comprise 11 species in seven genera ( Trigonia , Myophorella , Steinmanella , Iotrigonia , Megatrigonia , Pisotrigonia and Pterotrigonia ) . These taxa represent six subfamilies in four families . Introduction .. Geology Systematic ...
... comprise 11 species in seven genera ( Trigonia , Myophorella , Steinmanella , Iotrigonia , Megatrigonia , Pisotrigonia and Pterotrigonia ) . These taxa represent six subfamilies in four families . Introduction .. Geology Systematic ...
Page 4
... comprises the following taxa : Schizodidae ( Schizodinae and Eoschizodinae ) , Scaphellinidae , Myophoriidae , Pachycardiidae ( Pachycardiinae and Eoastartinae ) , and Minetrigoniidae ( including Costatoriidae ) . Diagnosis Superfamily ...
... comprises the following taxa : Schizodidae ( Schizodinae and Eoschizodinae ) , Scaphellinidae , Myophoriidae , Pachycardiidae ( Pachycardiinae and Eoastartinae ) , and Minetrigoniidae ( including Costatoriidae ) . Diagnosis Superfamily ...
Page 10
... comprises the families Frenguelliellidae ( Frenguelliellinae and Laevitrigoniinae ) with subconcentric , more or less entire , flank costation , Myophorellidae ( Myophorellinae and Steinmanellinae subfam . nov . ) with obliquely nodate ...
... comprises the families Frenguelliellidae ( Frenguelliellinae and Laevitrigoniinae ) with subconcentric , more or less entire , flank costation , Myophorellidae ( Myophorellinae and Steinmanellinae subfam . nov . ) with obliquely nodate ...
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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