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Keep "actinopterygian" when the sentence already sounds natural, when a synonym would add unintended emphasis, or when readers need the most familiar wording. A synonym should clarify or sharpen the message, not simply make the sentence look more varied.
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6 total sentences available.
[…] actinopterygians have 'ray fins' which are supported by a series of narrow cartilaginous or bony rods called radials, while sarcopterygians have 'lobe fins' supported by a single basal bone and with muscles that can modify the posture of the fin.
Source: wiktionary
The ear of all nonteleostean actinopterygian fishes (Grande and Bemis 1996) does not differ much from that of ratfish (considered by most an ancient line of cartilaginous fish), with the notable exception of the position of the ultricular macula.
Source: wiktionary
The otico-orbitotemporal region is formed by a single ossification in primitive actinopterygians but by many separate ossifications in advanced actinopterygians, expecially teleosts.
Source: wiktionary
2004, M. L. J. Stiassny, E. O, Wiley, G. D. Johnson, M. R, de Carvalho, 24: Gnathostome Fishes, Joel Cracraft, Michael J. Donoghue (editors), Assembling the Tree of Life, page 416, The most basal of living actinopterygians are the bichirs (Polypteridae), a small group (11 spp.) of African fishes previously thought to be related to the lobefin fishes (sarcopterygians), or to form a third group.
Source: wiktionary
Showing 4 of 6 available sentences.
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