Annals of the South African Museum |
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Geology Systematic palaeontology CONTENTS Superfamily Myophoriacea Superfamily Trigoniacea Superfamily Myophorellacea Superfamily Megatrigoniacea Acknowledgements References .. Ann . S. Afr . Mus . 100 ( 1 ) , 1991 : 1–52 , 25 figs .
Geology Systematic palaeontology CONTENTS Superfamily Myophoriacea Superfamily Trigoniacea Superfamily Myophorellacea Superfamily Megatrigoniacea Acknowledgements References .. Ann . S. Afr . Mus . 100 ( 1 ) , 1991 : 1–52 , 25 figs .
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Discussion Superfamily MYOPHORIACEA Bronn , 1849 ( nom . transl . herein ex family Myophoriidae Bronn , 1849 ) Diagnosis Generally small to medium - sized trigonioids with prosogyrous beaks , rarely orthogyrous or opisthogyrous .
Discussion Superfamily MYOPHORIACEA Bronn , 1849 ( nom . transl . herein ex family Myophoriidae Bronn , 1849 ) Diagnosis Generally small to medium - sized trigonioids with prosogyrous beaks , rarely orthogyrous or opisthogyrous .
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Superfamily MEGATRIGONIACEA van Hoepen , 1929 ( nom . transl . herein ex subfamily Megatrigoniinae van Hoepen , 1929 ) Diagnosis Small to very large myophorellines , commonly pyriform to very produced and rostrate posteriorly ...
Superfamily MEGATRIGONIACEA van Hoepen , 1929 ( nom . transl . herein ex subfamily Megatrigoniinae van Hoepen , 1929 ) Diagnosis Small to very large myophorellines , commonly pyriform to very produced and rostrate posteriorly ...
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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
Bibliographic information
| Title | Annals of the South African Museum Annals of the South African Museum, South African Museum Volume 100 of Annals of the South African Museum: Annale Van Die Suid-Afrikaanse Museum, South African Museum |
| Author | South African Museum |
| Publisher | The Museum, 1991 |
| Original from | the University of California |
| Digitized | 21 Jul 2016 |
| ISBN | 0868131180, 9780868131184 |
| Export Citation | BiBTeX EndNote RefMan |