. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. 216 ANNALS OF THE SOUTH AFRICAN MUSEUM ribs across the venter arise from ventrolateral tubercles. Anisoceras arrogans also does not show the peculiar zigzagging of the ribs across the venter (see Fig. 26) seen in the Angolan material. However, since A. arrogans and the present material represent different ontogenetic stages, the differences may not be as great as they first appear, and consequently the present material is identified as A. cf. arrogans (Giebel).. Please note that these images are extracted from scanned
. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. 216 ANNALS OF THE SOUTH AFRICAN MUSEUM ribs across the venter arise from ventrolateral tubercles. Anisoceras arrogans also does not show the peculiar zigzagging of the ribs across the venter (see Fig. 26) seen in the Angolan material. However, since A. arrogans and the present material represent different ontogenetic stages, the differences may not be as great as they first appear, and consequently the present material is identified as A. cf. arrogans (Giebel).. 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 [etc. ] The Museu
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Keywords: ., bookauthorsouthafr, bookcentury1800, bookdecade1890, bookyear1898
