When I worked as a media specialist in an elementary school, the most popular section was 567.9, the Dewey number for dinosaurs. Most of the time it was a boy who checked out the dinosaur book, although now and again a girl asked for one. I even had a kindergartener who only wanted books on dinosaurs. Week after week he took another book from the section until there were no more left for him to choose. Today, dinosaurs are still very popular in the elementary or middle school library. Here are some resources to get you started:
Best Books For Teaching About Dinosaurs- from Education World
Billy Bear's Land O' Dinosaurs- story with links
Books About Dinosaurs-books here for kids and teachers (reference books)
Books About Dinosaurs- from Barnes and Noble; reviews online
Dinobuzz- current topics concerning dinosaurs
Dinosaur Central- Dino viewer from Discovery
Dinosaur Crafts- from Enchanted Learning
Dinosaur Floor- why dinosaurs are extinct
Dinosaur Hall- The Academy of Natural Sciences
Dinosaur Lesson Plans- from Lesson Plans Page
Dinosaur Safari- The UnMuseum of UnNatural History
Dino Dictionary- dinosaurs from A to Z
Dino Time Machine- fun, facts, books, toys
Dinobuzz- topics which concern dinosaurs
Dinodig-online games
Dinopedia- a wiki about prehistoric life
The Division of Paleontology- American Museum of Natural History
Enchanted Learning-lots of fun!
Great Dinosaur Books for Kids- from Amazon.com; reviews online
National History Museum- (England)
Printable Dinosaur Worksheets- from TeAchnology
Sue at the Field Museum- The largest, most complete, best preserved T. rex
Take a Closer Look at Bizarre Dinosaurs- interactive from National Geographic