Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumWest, Newman & Company for the trustees of the Museum, 1990 - Natural history |
From inside the book
Results 1-3 of 4
Page 24
... DESCRIPTION Superfamily TRIGONIACEAE Lamarck , 1819 Family Trigoniidae Lamarck , 1819 Subfamily Rutitrigoniinae van Hoepen , 1929 Shell small to moderately large , subovate to pyriform , subtrigonal and subtrapezoidal . Typically with ...
... DESCRIPTION Superfamily TRIGONIACEAE Lamarck , 1819 Family Trigoniidae Lamarck , 1819 Subfamily Rutitrigoniinae van Hoepen , 1929 Shell small to moderately large , subovate to pyriform , subtrigonal and subtrapezoidal . Typically with ...
Page 26
... Description Shell medium sized ( maximum length about 60 mm ) , longer than high ( H / L = 0,73-0,80 ) , subtrapezoidal , with low subterminal umbones and incurved opisthogyrous beaks . The valves are moderately inflated ( W / L = 0,20 ...
... Description Shell medium sized ( maximum length about 60 mm ) , longer than high ( H / L = 0,73-0,80 ) , subtrapezoidal , with low subterminal umbones and incurved opisthogyrous beaks . The valves are moderately inflated ( W / L = 0,20 ...
Page
... description are to be designated paratypes ; additional material not regarded as paratypes should be listed separately . The complete data ( registration number , depository , descrip- tion of specimen , locality , collector , date ) of ...
... description are to be designated paratypes ; additional material not regarded as paratypes should be listed separately . The complete data ( registration number , depository , descrip- tion of specimen , locality , collector , date ) of ...
Other editions - View all
Common terms and phrases
abbreviated according to chronology acute angle Aitken ANNALS antecarinal sulcus bicuspidata Gould Broad subtrigonal area Cape Town comma separates comprises coarse concentric costae curve strongly upwards described Haughton escutcheon fastigiate roof-shaped flank costae Gastropoda GENUS OF RUTITRIGONIINAE Hoepen holotype Kobayashi krenkeli Lamarck Lange Later flank Leda LOWER CRETACEOUS APTIAN margin and obliquely marginal carina Megatrigonia middle growth stages Nakano namacolus nepionic stages noteworthy similarities Nucula obliquely truncate opisthogyrous beaks ornament comprises paratypes parentheses posterodorsal commissure punctuation reduction or enlargement references registration number respiratory margin ribbing Roman numerals RUTITRIGONIINAE BIVALVIA scientific name separate author's name shell is fastigiate Shell medium sized shouldered italics Smith South African Museum species straight posterodorsal margin strongly upwards posteriorly subconcentric subheadings are shouldered subterminal umbones subtrapezoidal Synonymy arrangement Syrotrigonia taxa Trigonia Rutitrigonia TRIGONIACEA umbonal ridge V-shaped costae ventral margin VOLUME 99 volume number Von Huene weakly ZULULAND Zulutrigonia gen Zulutrigonia pongolensis Rennie