Filter
Sten, mineral & fossil
Filter
Distant relatives of modern lobsters, horseshoe crabs, and spiders, trilobites swam the planet's prehistoric seas for 300 million years, from the Lower Cambrian to the end of the …
Distant relatives of modern lobsters, horseshoe crabs, and spiders, trilobites swam the planet's prehistoric seas for 300 million years, from the Lower Cambrian to the end of the …
Gems are objects of wealth, icons of beauty, and emblems of the very best of everything. Given as tokens of love and affection, they also come in a kaleidoscopic array of hues and …
"The ultimate dino tour."--Library Journal, Best Reference 2019 "Perhaps the easiest way to glimpse . . . all this new knowledge is to leaf through Norell's The World of Dinosaurs. …