Is Thundering Spineback legal in Standard, Modern, and Commander?

Thundering Spineback is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Thundering Spineback?

Thundering Spineback is a Creature — Dinosaur. Its oracle text reads: "Other Dinosaurs you control get +1/+1. {5}{G}: Create a 3/3 green Dinosaur creature token with trample. (It can deal excess combat damage to the player or planeswalker it's attacking.)"