Annals of the South African MuseumThe Museum, 1991 - Natural history |
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Page 4
... Discussion Although Myophoriacea are absent from the present fauna , they are dis- cussed because of their relevance to the revised classification presented here . The superfamily comprises the following taxa : Schizodidae ( Schizodinae ...
... Discussion Although Myophoriacea are absent from the present fauna , they are dis- cussed because of their relevance to the revised classification presented here . The superfamily comprises the following taxa : Schizodidae ( Schizodinae ...
Page 9
... Discussion Rennie ( 1947 ) compared material from the Lower Aptian of southern Moçambique with this species , but it differs in being slightly more elongate , with a more convex anterior margin , and in having maximum downward convexity ...
... Discussion Rennie ( 1947 ) compared material from the Lower Aptian of southern Moçambique with this species , but it differs in being slightly more elongate , with a more convex anterior margin , and in having maximum downward convexity ...
Page 43
... Discussion Although this taxon is included by many within the synonymy of the Mega- trigoniinae , the subfamily is present already in the Upper Bajocian of Argentina , contemporaneous with the most primitive megatrigoniines , i.e. Andi ...
... Discussion Although this taxon is included by many within the synonymy of the Mega- trigoniinae , the subfamily is present already in the Upper Bajocian of Argentina , contemporaneous with the most primitive megatrigoniines , i.e. Andi ...
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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