1) Early Cretaceous fish of Asia 
Protopsephurus, from the Ancient Greek πρῶτος (prôtos, `first”), ψῆφος (psêphos, `pebble”), and φύρως (phúrōs, `mixer”), is an extinct genus of paddlefish which existed in China during the Barremian age to the Aptian age of the Early Cretaceous period. It contains the species Protopsephurus liui, which was measured...