Annals of the South African MuseumThe Museum, 1978 - Natual history |
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Page 66
D = diameter , Wb = whorl breadth , Wh whorl height , U = umbilical diameter , R.
ribs per whorl . Figures in parentheses are dimensions expressed as a
percentage of diameter . D Wb Wh Wb : Wh U R Holotype BMNH C81266 at 32 at
SAS ...
D = diameter , Wb = whorl breadth , Wh whorl height , U = umbilical diameter , R.
ribs per whorl . Figures in parentheses are dimensions expressed as a
percentage of diameter . D Wb Wh Wb : Wh U R Holotype BMNH C81266 at 32 at
SAS ...
Page 210
Diagnosis A densely ribbed species of Anisoceras with 8-15 ribs in a distance
equal to the whorl height ; 2 or 3 ribs are looped from small , acute dorsolateral
tubercles to prominent rounded bases of septate ventrolateral spines , commonly
...
Diagnosis A densely ribbed species of Anisoceras with 8-15 ribs in a distance
equal to the whorl height ; 2 or 3 ribs are looped from small , acute dorsolateral
tubercles to prominent rounded bases of septate ventrolateral spines , commonly
...
Page 226
Earliest whorls ornamented with rather robust ribs , narrower than the interspaces
and with three in a distance equal to the whorl height , which cross the venter
obliquely so that the four rows of tubercles on the main ribs are asymmetrically ...
Earliest whorls ornamented with rather robust ribs , narrower than the interspaces
and with three in a distance equal to the whorl height , which cross the venter
obliquely so that the four rows of tubercles on the main ribs are asymmetrically ...
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Common terms and phrases
abbreviation Africa Albian Ammonites Anisoceras appear Aptian author's name authors Barnard bearing BMNH body body chamber burchelli Cape Town capital Casey closely Collected colony compressed Cretaceous described Description designated developed diameter differs Discussion distal dorsal Equus Family fauna female figures flank Formation four genus Holotype illustrations included indicated infertile inner Kennedy Klinger known lacking lateral length Locality Lower male margin material Middle Millard Mortoniceras Note occur original ornament outer paratypes Pereopod Pictet Porto Amboim present preserved quagga range references ribs River rounded Sanmartinoceras scientific segment separates setae shell short shoulder single slightly Smith South African Museum southern Spath species specimens spines Stoliczkaia Synonymy Tables telson tubercles Type species umbilical University Upper uropod USNMNH venter ventral ventrolateral whole mount whorl whorl section Wiedmann zebra Zululand