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Crossword clue: possessing a tail with the upper lobe larger than the lower and with the vertebral column prolonged into the upper lobe

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

heterocercal 12 letters wn-def

possessing a tail with the upper lobe larger than the lower and with the vertebral column prolonged into the upper lobe

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Related clues

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