This paper reviews the Sinamiidae. The supplementary descriptions of Sinamia huananensis and Ikechaoamia orientalis are made. The specific characters of these two genera have been emended. On the basis of this, the geological and geographical distributions of Sinamia and Ikechaoamia are discussed. The slnamiids yielded from the Lycoptera- bearing beds in North China are S. zdanskyi and I. orientalis, and from the Mesoclupea-bearing beds in Southeast China are S. huananensis and I. meridionalis. Based on the characters of the fish faunas stated above, the formations containing these two fish faunas in North and Southeast China should be Upper Jurassic and can be correlated generally.

Key words: pisces, Sinamiidae, Upper Jurassic, China.