The fossil wood-Piceoxylon dongguanensis sp. nov. was collected from the Late Cretaceous strata of Dongguan City

Central Guangdong. The strata also yield some macrofossil plants and abundant sporopollens of Late Cretaceous (Turonian) in age. The fossil wood represents a trunk base

about 4 m in length and ranging from 70 cm × 30 cm to 90 cm × 40 cm in size. Its periphery

about 2￣ 3 cm in thickness

being charcoalified

shows the internal structure of the secondary xylem

which is studied by scanning electron micrograph (SEM). In transverse sections

growth rings are somewhat distinct and the tracheids are square or polygonal in outline.The resin canals are small and separated from one to another. The bordered pits in the radial walls are seen to be in one row. The pits are small

elliptical

separated from each other. The pitwapertures are fusiform. some with pit membrane. Bars of Sanio absent. Medullary rays parenchymatous

some horizontal walls with spiral thickenings

abietinean pittings 1 ￣ 3 per field

oval or fusiform. In tangential sections only one uniseriate ray (3 cells in height) can be seen

no horizontal resin canals are preserved. There are some tracheids with spiral thickenings but without bordered pits