Araucariaceae is a very ancient family of conifers. It achieved its maximum diversity in the Jurassic and Cretaceous periods, when it was distributed almost worldwide. At the end of the Cretaceous, when dinosaurs became extinct, so too did the Araucariaceae in the northern hemisphere. Today 41 species are known, in three genera: Agathis, Araucaria and Wollemia. All are derived from the Antarctic flora and distributed largely in the southern hemisphere. By far the greatest diversity is in New Ca… (More on Araucariaceae)