Annals of the South African MuseumThe Museum, 1991 - Natural history |
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Page 15
... included Yeharella within the strict synonymy of Yaadia , it seems to be phyletically important and is here retained at the subgeneric level . Significantly , Tashiro & Kano ( 1989 , fig . 4 ) showed the Japanese species of Yaadia as ...
... included Yeharella within the strict synonymy of Yaadia , it seems to be phyletically important and is here retained at the subgeneric level . Significantly , Tashiro & Kano ( 1989 , fig . 4 ) showed the Japanese species of Yaadia as ...
Page 26
... included in the Apiotrigoniinae by Tashiro ( 1979 ) , but from virtually the first appearance of the subfamily there are two dis- tinct phyletic lines ( cf. Tashiro 1979 , figs 17-18 ) . Skwarko ( 1970 ) , Nakano ( 1971 ) and Tashiro ...
... included in the Apiotrigoniinae by Tashiro ( 1979 ) , but from virtually the first appearance of the subfamily there are two dis- tinct phyletic lines ( cf. Tashiro 1979 , figs 17-18 ) . Skwarko ( 1970 ) , Nakano ( 1971 ) and Tashiro ...
Page 27
... included ( Nakano 1965 ) in Megatrigonia , leaves no doubt as to its ancestry . Although Tashiro ( 1979 ) included Columbitrigonia and Megatrigonia conocardiiformis ( Krauss ) in the Apiotrigoniinae , their unornamented area and ...
... included ( Nakano 1965 ) in Megatrigonia , leaves no doubt as to its ancestry . Although Tashiro ( 1979 ) included Columbitrigonia and Megatrigonia conocardiiformis ( Krauss ) in the Apiotrigoniinae , their unornamented area and ...
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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