Pleuracanthus
noun
Pleu·ra·can·thus
| \ ˌplu̇rəˈkan(t)thəs\
Definition of Pleuracanthus
: a genus (the type of the family Pleuracanthidae) of Paleozoic sharks of the Carboniferous and Lower Permian of Europe and North America having a subterminal mouth, long dorsal fin, and a strong serrated spine on the nape
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