A new species of Pterocarya (Juglandaceae) from Middle Jurassic of Yanliao region, North China
Pan Kuang
Published on : 01-Jan-2022
DOI : https://dx.doi.org/10.22244/rheedea.1996.06.01.12
DownloadAbstract
A fossil fructification of Pterocarya associated with the Middle Jurassic floras of Eastern Yanliao of North China resembles closely that of the modem species Pterocarya stenoptera C. DC. and P. tonkinensis (Franch.) Dode, in morphology, structure and habit; and is described as a new species viz., P. sinoptera Pan Kuang. It implies that the genus Pterocarya varies little from Jurassic to the present, as in similar cases of Jurassic Paliurus and Zizyphus reported in 1990 from the same fossil flora. It is obvious that Amentiferous and Magnolian taxa had been in China during Middle Jurassic or earlier, showing that Pterocarya, or Juglandaceae as a whole, may have originated in North China before Mesozoic.
