barriers rather recently because of destruction of former rainforest cover. Such "young" barriers
have been include as "with limited effect" although they may have a strong effect today, because
they probably had little effect on the past development of presently existing taxa.
References: Bartholomew, J. C. (ed.), 1979: The
concise atlas of the world. Times books, London. Carr, A.,
Life - Wunder der Natur: Afrika, Flora und Fauna. Time-Life
(Nederland) N. V. Diercke Weltatlas, 101. Aufl., 1957.
Verlag, Braunschweig Sanderson, I. T., 1940: The mammals
north Cameroon forest area. Transactions of the Zoological Society
species, subspecies, local populations
Preliminary draft; H. Schulze, H. Fitch-Snyder, L. Larsson et al.
Last amendment: 22 October 1998
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