01425cam a2200373 4500 445670994 TxAuBib 20101102120000.0 060130s2005||||||||||||||||||||||||eng|u 2004018060 9781592963652 lib. 159296365X lib. KyBuM KyBuM TxAuBib Gray, Susan Heinrichs. Crinoids and blastoids / by Susan H. Gray. Chanhassen, MN : Child's World, 2005. 32 p. : col. ill., col. photos. ; 25 cm. Exploring dinosaurs & prehistoric creatures Includes index. Includes chronology. Includes glossary. Includes bibliography. This book describes the physical characteristics and behavior of crinoids, sea animals that have existed for the past 490 million years and blastoids, animals that lived in the ocean from about 430 million to 250 million years ago. 4-8 Medialog, Inc. Accelerated Reader AR Middle Grades 5.2 0.5 quiz: 85279 disk(s): ALL30. 20101115. Crinoids. Blastoids. Prehistoric animals. Crinoidea. Blastoidea. Animals, Fossil. Exploring dinosaurs & prehistoric creatures.