Books like Every Hidden Thing
Kenneth Oppel
Every Hidden Thing is 368 pages, about 6 hours 45 minutes at 250 words a minute.
12 books to read next
How long each takes
Dinosaur 2.5 h 
Eyewitness Dinosaur 1.2 h 
We Don't Eat Our Classmates 53 min 
Rex 2 53 min 
Dinosaurs 35 min 
Tyrannosaurus Drip 35 min 
Valley of the Giant Skeletons 2.4 h 
Rex 1.2 h 
Still Star-Crossed 6.6 h 
Fossils Tell of Long Ago 35 min 
Awake 6.2 h 
Digging Up Dinosaurs 35 min Bar height shows length. Estimated at 250 words a minute.