Abstract
Right and left parietal fragments were found on the river floor of Chai-liao river in Cho-chen, Taiwan. They are considered to be derived from the gravel bed between Tainan formation (middle Holocene) and Kicho formation (middle Villafrancian). They are well fossilized with density of 2.58 (right parietal fragment), brown coloured, lustrous and slightly weathered. The right parietal fragment is thought to have belonged to a young individual, by its thickness (4.1-5.6mm), weak superior temporal line and opened sagittal suture. The left parietal fragment is thought to have belonged to a full matured individual by its thickness (4.9-6.5mm) and strong superior temporal line. These two should be attributed to Homo sapiens sapiens. The chronological age estimated by fluorine and manganese contents is about 20, 000 to 30, 000 years B.P.
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