The Princeton Field Guide to Pterosaurs Museum Exclusive Appearance: Iridescent stone displaying flashes

Appearance: Iridescent stone displaying flashes of multiple colors

the Grand Canyon offers a landscape that’s as awe-inspiring as it is timeless

recognize God's ongoing work in the world

Dive into the mystery of the Mississippi and see if your team has the skills to crack the case before time runs out

Makes a thoughtful gift for rockhounds

The Princeton Field Guide to Pterosaurs Museum Exclusive Appearance: Iridescent stone displaying flashesOnce seen by some as evolutionary dead enders, pterosaurs were vigorous winged reptiles capable of thriving in an array of habitats and climates, including polar winters. The Princeton Field Guide to Pterosaurs transforms our understanding of these great Mesozoic archosaurs of the air. This incredible guide covers 115 pterosaur species and features stunning illustrations of pterosaurs ranging in size from swallows to small sailplanes, some with