T6G 2E9, Canada. A new species of Pinus , Subgenus Pinus , Subsection Contortae based on fossil cones from Ch'ijee's Bluff, Yukon Territory, Canada. Three structurally preserved conifer ovulate cones are described from the Pliocene sediments of Ch'ijee's Bluff on the Porcupine River, near Old Crow, Yukon Territory. Bracts are 6 mm long, lack an abaxial lobe and contain a single terete trace accompanied by two resin canals. The pith is parenchymatous with few scattered sclerenchyma cells near its outer margin.
Vascular tissue consists of a continuous cylinder of secondary xylem with few resin canals.
The outer cortex is also parenchymatous with a thin layer of sclerenchyma at its outer edge. Vascular tissues in the ovuliferous scale and bract originate as single, continuous cylindrical strands from the axis stele and diverge in the outer cortex. The abaxially concave ovuliferous scale trace splits into separate vascular bundles that alternate with resin canals in the most distal sections. Some megagametophyte tissue is preserved however, no embryos were found. Fossils were compared to extant species of Pinus Section Pinus and most closely resemble those of Pinus contorta Dougl.