Chimpanzee with banana ornament on the American Museum of Natural History's Origami Holiday Tree.
During the holiday season, volunteers will be on hand to teach museum visitors of all ages the art of origami paper folding. Past themes have included "Discovery," "Folding the Museum," "Fantastic Creatures: Mythic and Real," "Origami in Flight," "Under the Sea," "Pocket Posy," and "Origami Safari."
A kuehneosaurus ornament on the American Museum of Natural History's Origami Holiday Tree. The kuehneosaurus was a reptile from the Upper Triassic period with wing-like membranes that allowed it to glide through the air. It was a carnivore with powerful jaws, thin limbs and tail.
A stibnite ornament, a duplicate of the American Museum of Natural History's stibnite specimen, the largest on public display in the world. The stibnite on display was likely formed some 130 million years ago when water heated by volcanic activity dissolved antimony and sulfur from surrounding rocks and flowed between layers of limestone, leaving a dense band of stibnite and occasional pockets containing long, elegant crystals.