. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 90 ANNALS OF THE SOUTH AFRICAN MUSEUM ^W-<^ -^-e-^-^^-x-^ ^^^^^^^^f^K'^^^ B '^j-~ -c- ?; ' -^-'?TF' ^ '""^^. Fig. 55. Baculites capensis Woods, 1906. Suggested evolution of ornament, from B. yokoyamai (A), through B. brevicosta (B), schencki (C), boulei (D), to typical capensis (E) and umsinenensis (F), and ultimately to B. menabensis type (Fig. 57) (see p. 93). Reeside (1927a: 4, pi. 2 (figs 6-19)). Typical forms of B. codyensis are easily distinguished from all varieties of B, capensis
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 90 ANNALS OF THE SOUTH AFRICAN MUSEUM ^W-<^ -^-e-^-^^-x-^ ^^^^^^^^f^K'^^^ B '^j-~ -c- ?; ' -^-'?TF' ^ '""^^. Fig. 55. Baculites capensis Woods, 1906. Suggested evolution of ornament, from B. yokoyamai (A), through B. brevicosta (B), schencki (C), boulei (D), to typical capensis (E) and umsinenensis (F), and ultimately to B. menabensis type (Fig. 57) (see p. 93). Reeside (1927a: 4, pi. 2 (figs 6-19)). Typical forms of B. codyensis are easily distinguished from all varieties of B, capensis. These have crescentic, rib-like lateral tubercles, which may be projected prominently over the venter, super- ficially resembling B. sulcatus. Atypical forms of B. codyensis, previously mis- identified as B. asper, have strong, distant bullae and a stouter whorl section (see Kennedy & Cobban 1991(3, pi. 16). These are identical to some of our B. capensis, referred to as form 6 (see Fig. 43A-H, 47A-F) by their strong, crescentic dorsolateral tubercles. Even though some representatives of B. capensis and B. codyensis appear identical, the populations as a whole are very distinctive. No known specimens of ^. capensis ever develop as strong and regular crescentic lateral ribbing as in typical B. codyensis, and no forms of B. codyensis ever develop longitudinally elongated lateral tubercles and a slight depression at mid-flank as in typical B. capensis. An as yet unnamed baculitid fauna from the Upper Turonian-Lower Coni- acian of Mossamedes, Angola, collected by Dr M. R. Cooper and now in the collections of the Museum, is of interest in apparently linking 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
