CUPRESSINOXYLON JIAYINENSE, A NEW SPECIES OF THE LATE CRETACEOUS FROMHEILONGJIANG PROVINCE, CHINA

Cupressinoxylon jiayinense spec. nov., a new species of silicified con iferous wood, is described from the Late Cretaceous in Jiayin County, Heilongjiang Province, Northeast China. The growth rings are distinct. The transition from earlywood to latewood is gradual. Rays range from 1- to 2-seriate, and are 4-68 cells high. Both horizontal and tangent ial walls of ray cells are smooth. The cross-field pitting is cupresso id. There are 2 or 3 pits per cross field. Ray tracheids are rarely pr esent. Wood parenchyma is abundant and diffuse. Resin canals are absen t. These features indicate affinities with Cupressaceae, specifically with some members of the extant genus Cupressus.