Fossil remains of Baiera delicatula offer a rare glimpse into the Mesozoic flora of Gondwana. Discovered in the Lower Cretaceous Koonwarra Fossil Bed of Victoria, Australia, this extinct gymnosperm is closely related to modern ginkgos. Palaeobotanical revisions have allied this taxon with Ginkgo australis, highlighting the historical diversity of the Ginkgoaceae family in the Southern Hemisphere.
The vegetative structures of this taxon exhibit the characteristic features of the family Ginkgoaceae. Leaves are fan-shaped and deeply divided into multiple narrow, linear segments with distinct dichotomous venation. The delicate, slender nature of these leaf lobes distinguished it from other contemporary ginkgophytes, reflecting adaptations to its humid, high-latitude environment.
Scientific investigations into the Koonwarra Fossil Bed suggest that this species grew in high-latitude zones during the Lower Cretaceous. Key highlights of its discovery include:
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