Ac·an·tho·des
| \ -ˈthō(ˌ)dēz \
Definition of Acanthodes
: a genus of small slender possibly degenerate fishes having generalized toothless jaws and a single small dorsal fin and found in the Carboniferous and Permian formations
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Merriam-Webster unabridged
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Time Traveler for Acanthodes
The first known use of Acanthodes was in 1834
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