T-Rex: Sherlock Holmes, who was the world's greatest public domain detective, furrowed his brow.

T-Rex: Here was a case to challenge even HIS skills!

T-Rex: Of course, the precise nature of his skills was now up for debate, since anyone could write anything about him. I can say he's skilled in lyrical flow, and nobody can stop me! Sherlock Holmes raps now, how's that taste??

Utahraptor: Pretty amazing, if I'm being honest!
T-Rex: Yeah, I like it too!

T-Rex: The way I figure it is he's blasted into the future and hears rap, then goes back in time with his newfound knowledge of future music. Maybe he keeps the time machine, I haven't decided yet.
Utahraptor: Oh snap.
T-Rex: Right??

T-Rex: "Here's a mystery for me to solve / Gonna find all the perps involved / I'm Sherlock, you're not gonna get absolved / But my science and mores come from Victorian England so I don't believe in evolution or vaccines"
Off panel: Nevermind