Authors: Dr. Thomas R. Holtz, Jr.

  • T. Rex: Hunter or Scavenger? (Jurassic World) — Dr. Thomas R. Holtz, Jr.

    T. Rex: Hunter or Scavenger? (Jurassic World) — Dr. Thomas R. Holtz, Jr.

  • Jurassic World Dinosaur Field Guide (Jurassic World) — Dr. Thomas R. Holtz, Jr.

    Jurassic World Dinosaur Field Guide (Jurassic World) — Dr. Thomas R. Holtz, Jr.

  • Dinosaurs The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages — Dr. Thomas R. Holtz, Jr.

    Dinosaurs The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages — Dr. Thomas R. Holtz, Jr.