heterocercal

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heterocercal
tail of a leopard shark
Triakis semifasciata

het·er·o·cer·cal

 (hĕt′ə-rō-sûr′kəl)
adj.
Relating to, having, or being a tail fin in which the upper lobe is larger than the lower and the vertebral column extends into the upper lobe, as in sharks.

[hetero- + Greek kerkos, tail + -al.]

heterocercal

(ˌhɛtərəʊˈsɜːkəl)
adj
(Zoology) ichthyol of or possessing a tail in which the vertebral column turns upwards and extends into the upper, usually larger, lobe, as in sharks. Compare homocercal
[C19: from hetero- + Greek kerkos tail]

het•er•o•cer•cal

(ˌhɛt ər əˈsɜr kəl)

adj.
designating or having a tail fin in which the upper lobe is larger than the lower lobe, as in sharks.
[1830–40; hetero- + Greek kérk(os) tail + -al1]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.heterocercal - possessing a tail with the upper lobe larger than the lower and with the vertebral column prolonged into the upper lobe
ichthyology - the branch of zoology that studies fishes
homocercal - possessing a symmetrical tail that extends beyond the end of the vertebral column (as in most bony fishes)