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Definition of Heterocercal
1. Adjective. Possessing a tail with the upper lobe larger than the lower and with the vertebral column prolonged into the upper lobe.
Definition of Heterocercal
1. 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.
Definition of Heterocercal
1. Adjective. (ichthyology) Of a fish's tail, such that the vertebral column bends and extends upwards into the upper lobe of the tail, making it larger than the lower lobe; as in sharks, rays, and skates. ¹
¹ Source: wiktionary.com
Definition of Heterocercal
1. [adj]
Medical Definition of Heterocercal
1.
Lexicographical Neighbors of Heterocercal
Literary usage of Heterocercal
Below you will find example usage of this term as found in modern and/or classical literature:
1. Darwin and After Darwin: An Exposition of the Darwinian Theory and a by George John Romanes, Conwy Lloyd Morgan (1892)
"69). The one is characteristic of ordinary fishes (teleosts), the other of sharks
FIG. 69.—heterocercal Tail, showing (A) external form and (B) internal ..."
2. Habit and Intelligence: A Series of Essays on the Laws of Life and Mind by Joseph John Murphy (1879)
"Among the Ganoid order of fishes (a most interesting order, of which the •Sturgeon
is the best known species) there are a heterocercal and a ..."
3. The Evolution of Life by Hubbard Winslow Mitchell (1891)
"Evolution of the early fishes—The ball-and-socket vertebrae —Bony vertebrae—heterocercal
tails—The egg—The blastoderm—The dorsal plates—The medullary ..."
4. Evolution: Its Nature, Its Evidences, and Its Relation to Religious Thought by Joseph Le Conte (1891)
"59), and the uneven- lobed, or heterocercal (Fig. 60). The one is characteristic
... Fio. 60.—heterocercal or vertebrated tail-fin. A, form ; B, structure. ..."
5. The Scientific Memoirs of Thomas Henry Huxley by Thomas Henry Huxley, Michael Foster (1899)
"heterocercal fish, the whole of its principal fin-rays being developed below the
vertebral column. It is as heterocercal as an ..."
6. The Evolution of Life, Or, Causes of Change in Animal Forms: A Study in Biology by Hubbard Winslow Mitchell (1891)
"Evolution of the early fishes—The ball-and-socket vertebrae —Bony vertebrae—heterocercal
tails—The egg—The blastoderm—The dorsal plates—The medullary ..."
7. Annals and Magazine of Natural History by William Jardine (1855)
"That they should be really heterocercal, ... but to all intents and purposes
intensely heterocercal; the chorda dorsalis in the Salmon, ..."
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