A molecular timer couples organism-wide temporal identity to developmental checkpoints - Peipei Wu; Jing Wang; Brett Pryor; Isabella Valentino; David F. Ritter; Kaiser Loel; Olya Yarychkivska; Shai Shaham; Justin Kinney; Sevinc Ercan; Leemor Joshua-Tor; Christopher M. Hammell (Proceedings of the National Academy of Sciences, 2026)