[2] Stuart Sumida, writing in The Quarterly Review of Biology, stated that "The authors make a valiant attempt to clear locality and phylogenetic perspectives, but it is a mixed bag.

They are properly up to date on the theropod origin of feathers and birds, yet they are a quarter century behind on mammalian ancestors, still calling them mammal-like reptiles as opposed to Synapsida."

"[3] Joanna K. Kowalewska and Michał Kowalewski writing in Palaeontologia Electronica found that "The compendium’s encyclopedic scope makes the guide necessarily akin to a cookbook.

They conclude, "All in all, The Complete Guide to Prehistoric Life is a great encyclopedic compendium, especially for those who are interested in spectacular fossils or happen to have pre-college family members.

The book also has a potential to evolve into a valuable teaching reference for K-12 educators, who develop courses that include aspects of paleontology and evolution.