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Burnmouth specimens. (A and B) Pentadactylous autopod (specimen UMZC 2011.8). A and B are to the same scale. (A) Photograph. (B) Interpretive drawing. (C) Photograph of a Crassigyrinus-like partial lower jaw (specimen UMZC 2011.9.1) in an external view. Anterior end and tooth-bearing bones are missing. (D) Interpretive drawing of the specimen. (E) Reconstruction of the skull of Crassigyrinus scoticus from the Viséan of Scotland (based on ref. 31) to the same scale as the lower jaw in C.
