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How Did Land Animals Evolve?


Functional Morphology of Crassigyrinus scoticus: Insights into Tetrapod Locomotor Evolution

Ossinodus is an extinct genus of stem tetrapod. Fossils have been found from the Ducabrook Formation in Queensland, Australia dating back to the middle Visean stage of the Early Carboniferous (Mississippian). It was originally placed within the family Whatcheeriidae, but the absence of an intertemporal bone as suggested by a recent reconstruction of the skull based on fragmentary material may prove it to be stemward of all whatcheeriids.
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    • History and Discovery 

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    • Paleobiology 

    • Paleoenvironment