| http://www.w3.org/ns/prov#value | - On the other hand, there are a number of morphological and physiological similarities shared between lampreys and gnathostomes, but not by hagfishes, that appear to be due to common ancestry, such as vertebral elements, highly differentiated kidney tubules, more than one semicircular canal, large exocrine pancreas, and so forth (Nelson 1994).
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