Trilobites and ammonites are two extinct ocean-dwelling creatures that have left their mark in fossils. Learn more about this animal group with the fossil records in this book.
Reading grade level: 2-3 Lexile level 540 Includes bibliographical references (page 23) and index
Contents:
Under the sea Preserved in sediment How sea creature fossils form How old are they? Early sea creature fossils --Plesiosaurs Index fossils Recent finds Finding fossils
