Annals of the South African MuseumThe Museum, 1991 - Natural history |
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Page 12
... species from nearly all otherwise similar Middle and Late Jurassic European Myophorella species ' ( p . 27 ) . On this basis Scaphogonia is retained as a valid subgenus of Myopho- rella , apparently endemic to North America . Similarly ...
... species from nearly all otherwise similar Middle and Late Jurassic European Myophorella species ' ( p . 27 ) . On this basis Scaphogonia is retained as a valid subgenus of Myopho- rella , apparently endemic to North America . Similarly ...
Page 13
... species to be described below is one of these . Until a major phylogenetic study of the Myophorellinae is undertaken , the writer hesitates to apply a new subgeneric name to the present species . Myophorella first appeared in the Lias ...
... species to be described below is one of these . Until a major phylogenetic study of the Myophorellinae is undertaken , the writer hesitates to apply a new subgeneric name to the present species . Myophorella first appeared in the Lias ...
Page
... species or subspecies is trans- ferred from its original genus . The name of a subsequent user of a scientific name must be separated from the scientific name by a colon . Synonymy arrangement should be according to chronology of names ...
... species or subspecies is trans- ferred from its original genus . The name of a subsequent user of a scientific name must be separated from the scientific name by a colon . Synonymy arrangement should be according to chronology of names ...
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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