English: Diagram of the bones of the skull of Spathicephalus mirus, shown in occipital view.
Based on Figure 6B of "The cranial morphology and relationships of the aberrant Carboniferous amphibian Spathicephalus mirus Watson" by E. H. Beaumont and T. R. Smithson (Zoological Journal of the Linnean Society122(1-2): 187-209).
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