Annals of the South African MuseumThe Museum, 1978 - Natual history |
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Page 66
... whorl height , U umbilical diameter , R = ribs per whorl . Figures in parentheses are dimensions expressed as a ... section changes from depressed and reniform to trapezoidal . The umbilicus is shallow , and the wall slopes gently outwards .
... whorl height , U umbilical diameter , R = ribs per whorl . Figures in parentheses are dimensions expressed as a ... section changes from depressed and reniform to trapezoidal . The umbilicus is shallow , and the wall slopes gently outwards .
Page 210
... Whorl section circular to elliptical , compressed . Description Up to 13 mm whorl - width : at this stage , the shell is coiled in a loose planispire , and has a slightly depressed to circular cross - section . Ornament comprises fine ...
... Whorl section circular to elliptical , compressed . Description Up to 13 mm whorl - width : at this stage , the shell is coiled in a loose planispire , and has a slightly depressed to circular cross - section . Ornament comprises fine ...
Page 226
... whorl height , a straight shaft with four prorsi- radiate ribs in a distance ... section is oval , depressed , although it is almost circular at small ... whorl section , and closer ribbing ( four to six in a distance equal to the whorl ...
... whorl height , a straight shaft with four prorsi- radiate ribs in a distance ... section is oval , depressed , although it is almost circular at small ... whorl section , and closer ribbing ( four to six in a distance equal to the whorl ...
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Common terms and phrases
abbreviation Aconeceras Africa Albian Alopecoceras Ammonites Angola Anisoceras Aptian authors BMNH body chamber Borissiakoceras Breistroffer Burchell's zebra burchelli Cape Town Casey Cenomanian Cobban Collected Collignon comma compressed Cretaceous diameter distal dorsal endopod Equus quagga exopod False Bay fauna female colonies figures flank genus geol Hamites Holotype Hysteroceras Igoda Formation Infertile colony K. H. Barnard Kennedy Klinger Kunene kunenensis Lateral view lobe Locality Mariella material Maxilla Maxilliped Millard Mortoniceras Durnovarites Natal Okavango ornament paratypes pereonite Pereopod perinflatum Pervinquière PF station Pictet & Campiche plains zebras pleonites Pleopod Plioplateia references Renz ribs River Sanmartinoceras Sanmartinoceras scientific name segment setae shell shoulder Sinzovia South African Museum southern Sowerby Spath specimens spines Stoliczkaia stripes subgenus subspecies suture Synonymy telson Tetragonites text-fig Theganeceras Therocephalia Type species umbilical umbilicus University of Cape Upper Albian uppermost Albian uropod USNMNH venter ventral ventrolateral tubercles whole mount whorl section Zambezi Zululand