Palaeoenvironmental Analysis Of The Messinian Macrofossil Floras Of Tossignano And Monte Tondo (Vena Del Gesso Basin, Romagna Apennines, Northern Italy) Teodoridis, Vasilis Kvaček, Zlatko Sami, Marco Utescher, Torsten Martinetto, Edoardo Acta Musei Nationalis Pragae Series B 2015 2015-12-31 71 3 - 4 249 292 [400,529,1067,1090] Magnoliopsida Salicaceae Populus Plantae Malpighiales 16 265 Tracheophyta species undetermined  Pl. 10, Fig. 8 Triangular bract 3.5 to 7 mmlong and 1.5 mmwide, attenuate apex and rounded base surface covered by spiny laciniate, up to 1 mmlong. Bracts of this typehave usually been assigned to a poplar ( Heer 1856, Unger 1867) without any specific determination. Even the generic determination is uncertain. M a t e r i a l. Bract impressions (Monte Tondo MSF1894; Tossignano MSF243).