lobe-finned fish
Americannoun
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Any of various fishes of the class Sarcopterygii, having paired fins that are rounded and fleshy, suggesting limbs. One group of lobe-finned fish are thought to be ancestors of amphibians and other land-dwelling vertebrate animals. They first appeared in the Devonian Period and are extinct except for the coelacanth and lungfish.
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Also called sarcopterygian
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Compare ray-finned fish See also crossopterygian
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
These intriguing results indicate that water, glycerol, urea, and boric acid permeabilities are plesiomorphic features of Aqp10 water channels in all tetrapods and lobe-finned fish.
From Science Daily ● Dec. 21, 2023
The research team found that similar to the tetrapod and lobe-finned fish Aqp10s, Aqp10.1 in ray-finned fishes also transport water, glycerol, urea, and boric acid.
From Science Daily ● Dec. 21, 2023
Only two groups of the lobe-finned fish are alive today: lungfish and coelacanths.
From Science Magazine ● Feb. 10, 2021
About 400 million years ago, they diverged from the line of lobe-finned fish that gave rise to tetrapods 30 million years later.
From Science Magazine ● Feb. 10, 2021
The features visible on the new snout suggested that Elpistostege was not an amphibian but a highly advanced lobe-finned fish.
From Scientific American ● Jun. 17, 2020
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
