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A CENTURY OF PROGRESS IN THE NATURAL SCIENCES 



J— -'-.r5gjt--,-r,;3g.- 



2wr'7j\-»<?'_^"'3*(r U^H'uskisbsE'iSl ™ ?L./»--*|i^™SE.-..Ii&'=i»^^.I--JSL, 





Kontinente wlbrend d«r Carbonxeit. 



»i K{mtiB«]ite im Obercarboa (aa«b FTethj, -.>i^ift TrftB8gressiocsgebi<^t iffl Uittele^rboa. 



I '^&MS3 KsatiooBte im UntBrcarbGo. ^^^^ Traiisg»sii9B«geM»t Un ob«nt«it OiHwu. 



f 



Si-":" " &f .' " ,Sr'' " tlTf"'"' W~' "ii?" 



Sontinente wibread der filteren Tertiflrzeit. 



KaBtiit!»it» iiB QiigooSn (nsoii Kskfa), 



Oiigswtos TtMisgre«B9!Mgel))8ts, Ndjb Kut«, t'orvcls (lid IWi 



asa 



Figure 3. Land-bridges in Carboniferous and early Tertiary times, according to various 

 authors. From Arldt, 1907. 



