What shark order is commonly known as the ground sharks?

The shark order commonly known as the ground sharks is Carcharhiniformes.

Carcharhiniformes is the largest shark order, containing more than 270 species in modern classifications. Its members include catsharks, houndsharks, swellsharks, requiem sharks, and hammerhead sharks. Typical features include two dorsal fins, an anal fin, five gill slits, and a nictitating membrane over each eye.

The name can cause confusion because “ground shark” is an informal collective term, not the name of one family or species. Requiem sharks and hammerheads, for example, are families within this broader order. The order has a deep fossil history: its earliest members appeared during the Middle to Late Jurassic, while major diversification occurred during the Late Cretaceous and later Cenozoic.