Annals of the South African Museum |
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Page 11
Although it has been included ( Poulton 1979 ) in the synonymy of Myophorella , Cox ( 1969 ) and Hirsch ( 1980 ) are followed in regarding it a valid taxon . Pseudomyophorella Nakano , 1961 , stands in the same relationship to ...
Although it has been included ( Poulton 1979 ) in the synonymy of Myophorella , Cox ( 1969 ) and Hirsch ( 1980 ) are followed in regarding it a valid taxon . Pseudomyophorella Nakano , 1961 , stands in the same relationship to ...
Page 12
Genus Myophorella Bayle , 1878 Type species . Trigonia nodulosa Bayle ( = T. nodulosa Lamarck , 1801 ) ; by the subsequent designation of Crickmay ( 1932 ) . Diagnosis Escutcheon smooth ; area relatively broad , with or without nodes ...
Genus Myophorella Bayle , 1878 Type species . Trigonia nodulosa Bayle ( = T. nodulosa Lamarck , 1801 ) ; by the subsequent designation of Crickmay ( 1932 ) . Diagnosis Escutcheon smooth ; area relatively broad , with or without nodes ...
Page 13
There are , however , still many species of Myophorella that do not fit comfortably into any of the above taxa ( cf. Leanza & Garate 1987 ) and the species to be described below is one of these . Until a major phylogenetic study of the ...
There are , however , still many species of Myophorella that do not fit comfortably into any of the above taxa ( cf. Leanza & Garate 1987 ) and the species to be described below is one of these . Until a major phylogenetic study of the ...
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Common terms and phrases
angles anterior anteroventrally appearance beaks become broad coarse commissure comprises concave concentric conocardiiformis Krauss convex Cooper crenulated Cretaceous crowded curved Description designation Diagnosis differs Discussion dorsal elongate escutcheon face faunas figured fine finely flank costae follow Formation genus Goldfuss growth rugae herzogi Hoepen holotype holubi Kitchin included interspaces Iotrigonia irregular Kitchin Kobayashi lanceolate Lateral view left valve marginal carina material maturity meet Megatrigonia moderately Myophorella Nakano narrow Neocomian nepionic stages nodate nodes Note oblique obsolete Occurrence opisthogyrous original ornament persists Pisotrigonia Port Elizabeth Museum posterior posteriorly primitive Pringle produced prominent Pterotrigonia radial references region relatively respiratory margin restricted Reyes ribs rounded rows separates Sharpe shell shoulder similar Skwarko slightly smooth South African Museum species specimens Steinmanella straight strongly subconcentric subfamily Superfamily Tashiro transverse transverse costellae trigonally Trigonia Trigoniinae tubercles Type umbones Upper Valanginian valve ventral margin weakly