https://sciencythoughts.blogspot.com/2020/02/preserved-gum-in-early-cretaceous.html
Sciency Thoughts: Preserved gum in an Early Cretaceous Welwitschiacean.
A wide variety of vascular plants produce fluid exudates such as resins and gums, with each group differing in chemical definitions. Due to...
early cretaceousthoughtspreservedgum