Protopsephurus on display at the Tianjin Natural History Museum - posted to Wikimedia Commons by Jonathan Chen

Paratype skeleton (IVPP V14203) of Liaobatrachus zhaoi on display at the Paleozoological Museum of China - posted to Wikimedia Commons by Jonathan Chen

Non-archosaur vertebrates also in the Jehol formations include proto-frogs like #Liaobatrachus, and a plethora of fish large and small. The basal paddlefish #Protopsephurus spanned across the entirety of the Jehol's ~10my window of time... (9/_)