In his work The Rise of Birds: 225 Million Years of Evolution , paleontologist Sankar Chatterjee provides a comprehensive review of the avian fossil record, arguing that birds began their evolutionary journey significantly earlier than often cited. Key Scientific Contributions
: Flight refinement and global diversification during continental breakup, including detailed analysis of feathered dinosaur finds in China. The Rise of Birds: 225 Million Years of Evolution
: While Chatterjee identifies Protoavis as the "first bird" based on its bird-like skull and neck, many in the scientific community remain skeptical, viewing the remains as a chimeric mix of different Triassic reptiles. In his work The Rise of Birds: 225
: The emergence of the avian lineage in the Pangean world via Protoavis . : The emergence of the avian lineage in
The book outlines a chronology of bird development across major geological eras:
: A sudden decline and near-extinction of most bird lineages alongside dinosaurs roughly 65 million years ago.