Idavensis

Idavensis is a term used in paleontology to refer to a specific geological time period within the Early Cretaceous epoch, approximately 125 to 113 million years ago. The name is derived from the Idavere Formation, a stratigraphic unit in Estonia, which is a key reference point for this time period. The Idavensis stage is characterized by a unique set of fossil assemblages, including a diverse range of marine reptiles, early birds, and dinosaurs. This stage is significant in the study of dinosaur evolution, as it marks the transition from the Jurassic to the Cretaceous periods, and provides valuable insights into the early diversification of these iconic reptiles. The Idavensis stage is also notable for its rich fossil record, which includes several well-preserved specimens of early birds and the discovery of the first known feathered dinosaur, Sinosauropteryx. The term "Idavensis" is used to describe the fauna and flora of this specific time period, and is an important tool for paleontologists in understanding the evolution of life during the Early Cretaceous.