What does heterocercal mean?

Updated: 11/1/2022
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Heteroceral is a Caudal fin shape with unequal lobes, the upper lobe being larger than the lower. Having the vertebral column extend up into larger lobe of caudal fin; typically found in sturgeons and many sharks, also the type of tail fin in which the vertebral column turns upwards into the upper lobe, which is longer than the lower.

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Q: What does heterocercal mean?
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