J Syst Evol ›› 1983, Vol. 21 ›› Issue (1): 108-109.

• Research Articles • Previous Articles     Next Articles

Fossil Pinus in Lai Yuan Xian, Hebei Province

1Tao Jun-Rong, 2Wang Qing-Shi   

  1.     1(Institute of Botany, Academia Sinica)
       2 (The First Regional Geological Survey of Hebei Province)
  • Published:1983-02-18

Abstract: The fossils here described were collected from the Lai Yuan, Hebei Province in north China. Well-preserved plant parts are cones of Pinus, identified as Pinus prototabulaeformis sp. nov. The species is different from other taxa of Pinus by larger cones and scales. The size of the cone is a reliable diagnostic character in the group: The large cone and scale indicate rather an arid climate in Summer in the region where the fossils are discovered. The age of bearing-beds is considered Upper Eocene-Lower Oligocene. Diagnosis: Cones ovate in general outline, 8.5 cm long, 4.5 cm in diameter. Seed scales oblong, 2—2.5 cm long, 0.8—1.1 cm wide. Apophysis obviously fattened andthickned, convex, compressed rhomboid, rostrate at the apical part of seed-bract.