14 genus 21 species late Jurassic Oxfordian-Kimmeridgian corals were first discovered to the west bank of Nam Co, Baoji area, Tibet. These corals are Goniocora cf. annulata Roniewicz， Calamophylliopsis cf. moreauna (Michelin)，Thecosmilia ? sp.，Calamophylliopsis ? sp.，Micrabacia ? sp.，Stylosmilia michelini M.-Edwards et Haime，Cladophyllia turbinata (Gregory)，Cladophyllia ? sp.，Thamnasteria ? sp.，Ovalastraea ? sp.，Montlivaltia ? sp.，Latiastraea goldfussi (Koby)，Donacosmilia cf. silinensis Liao，Thecosmilia baingoinensis sp. nov.，Placophyllia cf. rugosa Becker，Cladophyllia rollieri Koby，Thecosmilia cf. costata Fromentel，Goniocora ? sp.，Pleurocora crassa (Reuss)，Calamophylliopsis moreauna (Michelin)，Trocharaea ? sp.. These corals indicate that the yielding strata is not middle Permian Xiala Formation(Ft) as it was thought previously. The yielding strata are correlated to be the late Jurassic Tukari Ft on basis of this study. This discovery indicates that the Upper Jurassic in the Baoji area is not missing. Furthermore，the discovery of the Tukari Ft in the Baoji area indicates that the Upper Jurassic in the Coqên Basin is not missing, or is not represented by the Jienu Group which is characteristic by the shallow-sea detrital rocks, or is not represented by the Lagongtang Ft which is outcropped nearby and characteristic by shale and silty shale. It indicates that the Upper Jurassic in the Coqên Basin is characteristic by the reef facies carbonate rock. The discovery of the Tukari Ft increases the value of oil and gas exploration of the Coqên Basin because that it provides critical stratigraphic evidence for the existence of the Late Jurassic reef facies carbonate rock. The Tukari Ft is suggested to be treated as the new target strata for the oil and gas exploration in the Coqên Basin.