. Die geologischen grundlagen der abstammungslehre. Paleontology; Evolution. Fig. 145. Schädel eines jungen Walfisches (Balaena). A von der Seite, B von oben. (Nach Cüvier.) N nf. Fig. 146. Schädel eines erwachsenen Walfisches. A von der Seite, B von ohen. (Nach Cuvter.) Steinmann, Abstammungslehre. lg. 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 Steinmann, G. (Gustav), 1856-1929. Leipzig, W. Engelmann

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