. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. CRETACEOUS FAUNAS FROM SOUTH AFRICA 127. mm Fig. 39. Reconstruction of Acrioceras (A.) zulu sp. nov. Material One specimen only, BMNH C80034 from locality 170, cliff and gully sec- tions, 2 km north-west of Mlambongwenya Trading Store, on the north side of the stream, Makatini Formation, Barremian I. Dimensions Specimen D Wb Wh Wb/Wh U C80034 26,5 8,4 (32) 12,5 (47) 0,67 5,2 (20) Description The specimen is beautifully preserved, retaining replaced shell and part of the body chamber. Coiling is invol
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. CRETACEOUS FAUNAS FROM SOUTH AFRICA 127. mm Fig. 39. Reconstruction of Acrioceras (A.) zulu sp. nov. Material One specimen only, BMNH C80034 from locality 170, cliff and gully sec- tions, 2 km north-west of Mlambongwenya Trading Store, on the north side of the stream, Makatini Formation, Barremian I. Dimensions Specimen D Wb Wh Wb/Wh U C80034 26,5 8,4 (32) 12,5 (47) 0,67 5,2 (20) Description The specimen is beautifully preserved, retaining replaced shell and part of the body chamber. Coiling is involute, with a small, shallow umbilicus (20% of the diameter). The umbilical wall is flat, and inclined outwards; the umbilical shoulder is abruptly rounded. The whorl section is compressed (whorl breadth to height ratio is 0,67), with the greatest breadth below midflank. The inner flanks are gently rounded, the outer flanks flattened and convergent, the ventro- lateral shoulders rounded and the rather narrow venter somewhat flattened. Ornament consists of dense, broad, relatively strong, flexuous crowded ribs. Twenty-four ribs per whorl arise at the umbilical seam as mere striae. They are prorsiradiate across the umbilical wall and strengthen into feeble bullae at the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original South African Museum. Cape Town : The Museum
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
