lobe-finned fish

American  

[lohb-find] / ˈloʊbˌfɪnd /

noun

1. any fish that has rounded scales and lobed fins, as the coelacanth.

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lobe-finned fish Scientific  

1. 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.

2. Also called sarcopterygian

3. Compare ray-finned fish See also crossopterygian

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Example Sentences

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

Then surfactant genes, new nervous system genes, and other innovations enabled lobe-finned fish to leave the water temporarily.

From Science Magazine • Feb. 10, 2021

The ability to breathe air occasionally appeared in the common ancestor to ray-and lobe-finned fish, about 425 million years ago.

From Science Magazine • Feb. 10, 2021

If, as his article suggests, claspers are the progenitors of tetrapod limbs, then where do nearly amphibious lobe-finned fish such as Tiktaalik, of the same age as his placoderms, fit in this phylogeny?

From Scientific American • Apr. 22, 2011