Dicroidium

…252 million years old) and Dicroidium trees in Triassic-age coals (those roughly 252 million to 201 million years old); and large reptiles, such as Lystrosaurus, and amphibians in Triassic rocks. In 1990–91 dinosaur fossils were first found in the Transantarctic Mountains near the

…a Triassic flora dominated by Dicroidium, a seed fern that preferred warm, dry conditions—which indicates major climatic changes at the Permian-Triassic boundary. Dicroidium, a genus of the pteridosperm order, was part of an extensive Gondwanan paleoflora that was discovered in the Late Triassic Molteno Formation of southern Africa and elsewhere.…