Annals of the South African Museum, Volume 96The Museum, 1985 - Natural history |
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Page 302
... ribs that pass radially around the whorl and to ribs arising in groups of two or three from an umbilical tubercle . On the final hook these tubercles also disappear and the ribbing is simple . The suture line is quite simple with trifid ...
... ribs that pass radially around the whorl and to ribs arising in groups of two or three from an umbilical tubercle . On the final hook these tubercles also disappear and the ribbing is simple . The suture line is quite simple with trifid ...
Page 303
... ribs . However , both species are easily distinguished by the ornament of the final hook . In the former , there are radial , broad and rounded single ribs ( Casey 1961 : 80 , pl . 5 ( fig . 3a - b ) , pl . 21 ( fig . 2 ) ) , while in T ...
... ribs . However , both species are easily distinguished by the ornament of the final hook . In the former , there are radial , broad and rounded single ribs ( Casey 1961 : 80 , pl . 5 ( fig . 3a - b ) , pl . 21 ( fig . 2 ) ) , while in T ...
Page 307
... ribs are interrupted . The ribs show two rows of tubercles : one ventral and the other ventrolateral . On the upper part of the shaft some bear a third row of small tubercles near the umbilical edge . As in Toxoceratoides ? haughtoni ...
... ribs are interrupted . The ribs show two rows of tubercles : one ventral and the other ventrolateral . On the upper part of the shaft some bear a third row of small tubercles near the umbilical edge . As in Toxoceratoides ? haughtoni ...
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Common terms and phrases
abbreviations Aedeagus Age and distribution Agulhas Bank Alcyonium variabile ammonite Ancyloceras apex apical Aptian Bairdoppilata Barremian Barremian of western Bay borehole bicuspidata Brachycythere Campanian Cape Peninsula Cape Town Cenomanian Colchidites vulanensis Colophon Coniacian CPBA Cretaceous Cypraea Cypraeidae Cythereis Cytherelloidea described Dingle False Bay faunas female fuscorubra genera genus geol Gibberleberis Group habitat haughtoni Haughtonileberis Helicancylus Heteroceras holotype Indet iutsui J(c)-1 borehole K. H. Barnard Kakabadze 1971a labrum Lampanyctus lateral locality longicaudata Maastrichtian male mandibles mantle margin material Metalcyonium morphology Mtubatuba ornament ostracod outcrops paratypes patagonicum pondolandensis posterior pronotum range referred region ribs Richards Bay Río Mayer Rouchadzé 1933 samples Santonian sclerites shaft shell South African Museum south-east Africa specimens stations stokoei subfamily suckers SUID-AFRIKAANSE MUSEUM Swartberg Table taxa text-fig Thomson tibia Tonohamites Toxoceratoides tubercles Turonian Umzamba bed umzambaensis Upper Barremian variability Ventral process vulanensis australis western Georgia whorl section Zululand