Released in 2000, the novel is told from the perspective of Vincent Rubio, a Velociraptor private investigator in a world of dinosaurs who integrate themselves into modern society by wearing latex costumes to appear humanoid.

January magazine called Anonymous Rex a "fast-paced, often very funny fantasy-cum-detective story".

Club writer Keith Phipps wrote, "ridiculous it is, though still a pleasurable read.

"[2] Entertainment Weekly gave the novel an A, writing, "Witty, fast-paced detective work makes for a good mystery, but the story's sly, seamlessly conceived dinosaur underworld contains all the elements of a cult classic.

"[3] BookPage called the novel "stylish, witty, and fast-paced.