Fig. 2: Morphotypes of spiny fossils from the upper Eocene Dayu and Xiede sections, central Tibetan Plateau.
From: Rapid Eocene diversification of spiny plants in subtropical woodlands of central Tibet
a Prickles of living species Rubus alceifolius. b, d, e, h–k, Seven morphotypes of spiny fossils. c Enlargement of b. f Enlargement of h. g Thorns of living species Xylosma racemosum. (For c, f, scale bars = 1 mm; for others, scale bars = 10 mm).
