Bible Dictionaries
Heterocercal

Webster's Dictionary

(a.) Having the vertebral column evidently continued into the upper lobe of the tail, which is usually longer than the lower one, as in sharks.

Bibliography Information
Webster, Noah. Entry for 'Heterocercal'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​h/heterocercal.html. 1828.