. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. Heft 1/3 20/1969 Interpretation of Psammornis 301 for the inside of the shell. Taking the latter value to determine a, and using mm for the theoretical thickness of the shell, the outer axial dimensions of the egg come to X mm. The short axis ex- pressed in percent of the long axis yields an axial index of Ia = For a control, the same calculation is repeated with the maximally different radii, and mm, from the more worn outer sur
. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. Heft 1/3 20/1969 Interpretation of Psammornis 301 for the inside of the shell. Taking the latter value to determine a, and using mm for the theoretical thickness of the shell, the outer axial dimensions of the egg come to X mm. The short axis ex- pressed in percent of the long axis yields an axial index of Ia = For a control, the same calculation is repeated with the maximally different radii, and mm, from the more worn outer surface of the shell. This process leads to axial dimensions of X mm (Ia = ), which are 1/20 and 1/2 mm below the former. 3. The Arabian Psammornis spec. At the British Museum we examined the fragment of eggshell described by Lowe (1933) and labelled: ? Psammornis, Pleistocene, Freshwater De-. Fig. 9. Psammornis sp. from Arabia; shell fragment viewed from the outer (a) and mammillary (b) 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 Zoologisches Forschungsinstitut und Museum Alexander Koenig. Bonn : Das Forschungsinstitut
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