“…Data in keys I and II are based on descriptions of fossil wood species in original literature: (Unger, 1823;Felix, 1883;Schenk, 1883;Stenzel, 1904;Krӓusel & Stromer, 1924;Bancroft, 1935;Krӓusel, 1939;Sahni, 1964;Louvet, 1965;Müller-Stoll & Mädel, 1967;Lemoigne & Beauchamp, 1972;Mädel-Angeliewa & Müller-Stoll, 1973;Prakash & Bande, 1980;Süss, 1987;Cevallos-Ferriz & Barajas-Morales, 1994;Mehrotra et al, 1999;El-Saadawi et al, 2011;El-Saadawi et al, 2017;Nour-El-Deen et al, 2018) together with the additional references mentioned in Tables 1 and 2. Additional data was extracted from the insidewood database (InsideWood, 2004 onwards;Wheeler, 2011) for dicot wood species.…”