Acanthodii
plural noun
Ac·an·tho·dii
ˌaˌkanˈthōdēˌī,
ˌakən-
: a subclass of Placodermi comprising primitive Paleozoic fishes having the anterior margin of each fin supported by a stout spine and often having one or more pairs of spines similar to the fin spines along the lower lateral part of the body between the paired fins of each side
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“Acanthodii.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Acanthodii. Accessed 29 Nov. 2024.
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