What kind of dinosaur has spikes on its back? - Quora

qph.cf2.quoracdn.net/main-qimg-7bd1a2ec3d973d6b51f

What kind of dinosaur has spikes on its back? - Quora

qph.cf2.quoracdn.net/main-qimg-6c6aa612405cdea8524

qph.cf2.quoracdn.net/main-qimg-fe8de8aa7b6986939ae

qph.cf2.quoracdn.net/main-qimg-d59b546a0e0bf385b9d

qph.cf2.quoracdn.net/main-qimg-7abafa6e5a6611c0fff

qph.cf2.quoracdn.net/main-qimg-090ae1ef343de0350c6