From School Library Journal
Grade 4–7—While chondrichthyans, due to their cartilaginous nature, have been less likely to present as many fossilized remains as their cousins, the bony fishes, enough evidence has been recovered to open fascinating windows into their evolutions (and extinctions) over the last 375 million years. Bradley has sifted through this ancient record and allows readers a peek at some strange creatures. Consider
Stethacanthus, displayer of a surfboard-shaped dorsal fin bristling with toothlike spikes, and
Helicoprion, dangling a tight spiral of compacted teeth from its lower jaw like some preelectric buzz saw. Accompanied by realistic artwork, the terse text introduces readers to sharks in general and then goes on chronologically to present fragments of data on these long-lost species, about which not much is really known. Included are a handy time line and a size-comparison box for each species (using a human swimmer and a modern great white shark as yardsticks). Bradley also includes some odd cartilaginous "cousins" like
Sclerorhynchus and closes with the 50-foot Cenozoic monster,
Carcharodon megalodon. For those who have enjoyed Caroline Arnold's
Giant Shark: Megalodon, Prehistoric Super Predator (Clarion, 2000) or Deborah Diffily's
Jurassic Shark (HarperCollins, 2004), here is a strange new litany to dance trippingly on the tongue.—
Patricia Manning, formerly at Eastchester Public Library, NY Copyright © Reed Business Information, a division of Reed Elsevier Inc. All rights reserved.
An intelligent, handsomely designed look at the ancient fish that are the forerunners of today's efficient predator, the shark. The text is built in double-page spreads, starting with "What is a shark?" The question is answered in a burst of text and an illustration of a shark with bits of information lined to its various parts: eyes, sensors, teeth. One or two ancient sharks are described per spread: a sidebar connects them to contemporary sharks, and a diagram shows their size relative to a human diver. Some of these creatures, known only from fossil remains, are extremely odd, such as Edestus, which apparently had a middle row of teeth that could extend out like a spiked tongue, or the Helicoprion with the buzz-saw jaw--a spiral of teeth. Bradley uses bright colors and hard edges to delineate the best informed guesses as to what these sharks might have looked like. A glossary and bibliography are appended.
GraceAnne DeCandidoCopyright © American Library Association. All rights reserved