. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Jl ^ L . U I U L D E. Fig. 26. Suture lines of Coniacian Pseudobaculites and Baculites. A. Pseudobaculites nodosus Cobban, 1952. After Kennedy & Cobban (1991a, text-fig. 27). B-C. Baculites incurvatus Dujardin, 1837. After Kennedy (1984, text-fig. 42F). D-E. B. capensis Woods, 1906 (= B. boulei Collignon, 1931). D. After Collignon, 1931, pi. 11 (fig. 14). E. After Matsumoto & Obata (1963, text-fig. 93). Scale bars for size. alone cannot account for this phylogenetically sudden increase in sut
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Jl ^ L . U I U L D E. Fig. 26. Suture lines of Coniacian Pseudobaculites and Baculites. A. Pseudobaculites nodosus Cobban, 1952. After Kennedy & Cobban (1991a, text-fig. 27). B-C. Baculites incurvatus Dujardin, 1837. After Kennedy (1984, text-fig. 42F). D-E. B. capensis Woods, 1906 (= B. boulei Collignon, 1931). D. After Collignon, 1931, pi. 11 (fig. 14). E. After Matsumoto & Obata (1963, text-fig. 93). Scale bars for size. alone cannot account for this phylogenetically sudden increase in sutural complexity—specimens of B. capensis of similar size do show a progressive increase in overall denticulation of the suture line (Fig. 22), but the elements remain more or less quadrate and unconstricted and quite simple when compared to that of Pseudobaculites. Sutural complexity similar to that of Coniacian Pseudobaculites only occurs in much younger Baculites and Pseudobaculites natosini in the Campanian and Maastrichtian. The relatively simple Baculites suture is retained by the majority of baculitids in the Santonian (Fig. 28A-D), including the criocone curved genus Boehmoceras (Fig. 27). Baculites pseudobaculus (Fig. 28D), a rather poorly. 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
