Abstract
Fourteen species of fossil wood belonging to eleven genera and seven families were identified from 38 well preserved specimens collected from the Lower Coal-bearing Formation of Janggi Group at Donghae-myeon, Pohang City, Gyeongsangbuk-do Prefecture, Korea. Seven new taxa were found and described; they are Carya koreana Jeong et Kim, Betula janggiensis Jeong et Kim, Carpinus donghaensis Jeong et Kim, Ostrya geumgwangensis Jeong et Kim, Stewartia pseudo-camellioxylon Jeong et Kim, Acer minokamoensis Jeong, Kim et Suzuki and Acer pohangensis Jeong et Kim. The most abundant taxa are Betulaceae, Aceraceae, Ulmaceae, and Wataria. Except Wataria of which the habitat preference has not been confirmed, these taxa are major elements of cool-temperate vegetation and are similar to the Aniai-type flora of Japan. Previous studies of fossil plants from the Geumgwangdong Shale (leaves and seeds), the Upper Coal-bearing Formation (fossil woods) and the Yeonil Group (leaves and seeds) and this study, show that the climate of the Pohang Basin changed from cool-temperate to warm-temperate and subtropical during the Miocene.
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