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mssddeed mssddeed
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6 years ago
What are 2 pieces of anatomical evidence that lead ichthyologists to consider that sturgeons are a fairly old group of fishes?
 
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6 years ago
The sturgeon fishes share a number of characteristics with sharks, which are considered to be more primitive by many scientists. These shared characters include: heterocercal tail, and a ventral mouth.
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