Fossil remains of the prehistoric gymsomperm genus Baiera provide critical insights into the evolutionary history of the Ginkgoales lineage. These ancient plants flourished from the Permian period through the Cretaceous, leaving behind well-preserved foliage across global geological formations.
First described in the 19th century, the taxon represents one of the most widespread groups of fossil ginkgophytes. Paleobotanists utilize these specimens to reconstruct ancient climates and map the distribution of Mesozoic vegetation.
Leaves of Baiera exhibit a distinctive fan-shaped geometry characterized by deep division into multiple slender segments. The blade is typically incised into four major lobes, which further branch dichotomously into narrow, parallel-veined linear subdivisions.
A critical anatomical feature distinguishing this genus from the closely related Sphenobaiera is the presence of a distinct, well-defined petiole. Epidermal studies reveal uniform cells with straight walls on the upper leaf surface, while the lower surface contains numerous stomata surrounded by specialized subsidiary cells.
An extinct gymnosperm species from the Mesozoic era, recognized by its deeply dissected, ribbon-like leaf segments.
An extinct gymsomperm species from the Ginkgoaceae family, found in Mesozoic fossil beds.
An extinct ginkgophyte species from the Lower Cretaceous Korumburra Group, serving as the basionym for Ginkgo australis.
An extinct species of prehistoric ginkgophyte known for its deeply divided, slender-lobed fan-shaped leaves.
An extinct species of Jurassic ginkgophyte known for its highly branched, fan-shaped leaf fossils.
An extinct Mesozoic plant species identified by its characteristic fan-shaped leaves with narrow, dichotomous divisions.
External Databases: GBIF
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