Campbell, Kenton; Barwick, Richard
New material of Speonesydrion iani, an Early Devonian dipnoan from New South Wales, has provided additional information on the dentition and jaws. Two new partial palates have been found, and X-rays of the parasphe-noid shows that the structure is well preserved. The palatal teeth are well worn even in partly grown material, and they do not originate at a growth point, but at a thickening of the palate. More mandibles have been collected, and thin sections have been prepared to allow a...[Show more]
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