Chomp Rock 'n' Roll
From the Super Mario Wiki
Yoshi starts the level near a Chomp Rock and some Shy Guys, followed by a Mega Guy-producing pipe. The player can swallow one, turn it into an egg, and use it to clear an opening to the next area. Here, Yoshi turns into a mine cart and needs to proceed to the ring where his powers wear off while collecting clocks that add to his time. The next area contains a Middle Ring, another Chomp Rock and some enemies, which are soon followed by the goal roulette.