ˌ ̷ ̷ ̷ ̷ ̷ ̷ˈnōd.əˌdē, -ˈnäd.- noun plural
Usage: capitalized
Etymology: New Latin, from Semionotus, type genus + -idae
: a family of extinct Triassic ganoid fishes from America, Europe, and Africa that have a deep body, small mouth with teeth adapted chiefly to grinding or crushing, and rhomboid scales and that are often considered ancestral to the present-day freshwater gars