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isozoic
isozoic adj. 
/ˌaɪsəˈzoʊɪk/ [Greek ζωή life] characterized by or indicating the same forms of animal or plant life.
Brit. /ˌʌɪsə(ʊ)ˈzəʊɪk/
, /ˌʌɪsə(ʊ)ˈzəʊɪk/U.S. /ˌaɪsoʊˈzoʊɪk/
, /ˌaɪsoʊˈzoʊɪk//ˌaɪsəˈzoʊɪk/Π
1851 E. Forbes Let. to Ramsay in G. Wilson & A. Geikie Mem. E. Forbes (1861) xiv. 488 My new map of marine distribution, with my proposed Isozoic belts on it.
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