The Cretaceous Period is an important era in the evolution of Australian flora and much of what is known about plants during this time comes from the exceptional fossil record of the Winton Formation. On a worldwide scale, the first flowering plants on Earth appeared during the Early Cretaceous and this group would later come to dominate most terrestrial environments.
Another plant group recovered from this area include a genus of seed fern, Donponoxylon. In cross-section, the wood is divided into multiple segments, which may exhibit both continuous and discontinuous growth patterns. There are two species of Donponoxylon, but little is known about the affinities of this plant. It differs from conifers and cycads, which typically have single stems. Donponoxylon shares some similarities with the pentoxylales, a group of seed plants that also have complex multiple stem segments.
Images and text from: In Search of Ancient Queensland.
Principle Authors: Dr Alex Cook and Dr Andrew Rozefelds.
Published by the Queensland Museum, 2015.
Photographers: Peter Waddington, Rochelle Lawrence, Jeff Wright.