A forest trapped in sand
The Kyzylkum Desert, a vast expanse of red sand in Uzbekistan, holds a remarkable secret from the deep past. Buried within its Cretaceous rock layers, particularly the Bissekty Formation, are deposits of fossilized tree resin, or amber. This amber dates to the Cenomanian stage of the Late Cretaceous, approximately 90 to 100 million years ago. At that time, this now-arid region was a humid, subtropical coastal forest. The amber records this lost ecosystem, preserving its smallest inhabitants clearly.
The resin that formed this amber likely dripped from conifers related to modern cypresses or araucaria. As it oozed down the bark, it entrapped insects, spiders, plant fragments, and even pollen. Over millions of years, this resin hardened and fossilized, creating a perfect, three-dimensional record of life in the age of dinosaurs. The Bissekty Formation is famous among paleontologists for its fossil beds, which include dinosaurs like tyrannosauroids and titanosaurs, early birds, and various other vertebrates. The amber adds another layer of detail, capturing the world of arthropods that lived in the shadows of these giants.