Fig. 3

Brachyoxylon zhejiangense sp. nov. Tian, Zhu et Wang (PMOL-B-01476-a, b) from the Lower Cretaceous Guantou Formation in Xinchang of Zhejiang Province, SE China. a Transverse section, showing the obscure annual ring, scale bar = 0.5 mm; b–c Longitudinal section, showing uniseriate, rounded and contiguous bordered pits, scale bar = 0.05 mm; d–e Longitudinal section, showing uniseriate and distant bordered pits, scale bar = 0.05 mm; f Longitudinal section, showing biseriate alternate bordered pits, scale bar = 0.05 mm; g Longitudinal section, showing biseriate opposite bordered pits, scale bar = 0.05 mm; h–k Longitudinal section, showing the cross-field and smooth horizontal wall of ray cells, scale bar = 0.05 mm