Pinaceae is the most species rich and geographically dispersed group of living gymnosperms (Florin, 1963), and comprise a dominant component of modern mountain and boreal forests throughout the northern hemisphere (Florin, 1963). Although there are a few records of possible pinaceous species extending back to the Upper Triassic (Delevoryas and Hope, 1987), unequivocal evidence for the family does not appear until the Cretaceous, and Pinaceae may be the most recently derived conifer family. During the Early Cretaceous, pinaceous remains became common components of terrestrial plant communities, and a diverse array of ovuliferous cones signals...
PITYOSTROBUS HOKODZENSIS, A NEW SPECIES OF PINACEOUS CONE FROM THE CRETACEOUS OF RUSSIA
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STEPHEN R. RATZEL, GAR W. ROTHWELL, GENE MAPES, ROYAL H. MAPES, LARISA A. DOGUZHAEVA; PITYOSTROBUS HOKODZENSIS, A NEW SPECIES OF PINACEOUS CONE FROM THE CRETACEOUS OF RUSSIA. Journal of Paleontology ; 75 (4): 895–900. doi: https://doi.org/10.1666/0022-3360(2001)075<0895:PHANSO>2.0.CO;2
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