Titanoboa! Sort of. (An art exhibit with an aluminium giant snake; Titanoboa was smaller but still huge! http://www.thisiscolossal.com/2013/05/a-giant-aluminum-snake-skeleton-rises-from-a-pool-of-water-at-the-queensland-art-gallery/)
Images: Stingray Sex, Mini-Horses & Other Curiosities of Fossil Lake
From Fossil Lake, which was teeming with life during the early Eocene, about 52 million years ago. Only one frog has ever been found at the formation. The single specimen pictured here measures just 1.6 inches (4 cm) long.
According to some scientists, this 220-million-year-old fossil, from the late Triassic era. offers evidence that dinosaurs were not ancestral to birds. An archosaur called Longisquama insignis, a small reptile roughly the size of a mouse, has ignited scientific controversy due to the six vane-like appendages attached to either side of Longisquama's back. Some researchers believe the appendages were non-avian feathers and that early archosaurs were the ancestors of modern birds.