Did Bats Evolve Out of Thin Air?
Where is the evolution?
"Bats pop up in the fossil record [supposedly] around 50 million years ago during a time known as the Eocene. ... The 50-million-year-old bat specimens are already recognizable as bats, so where did they come from? When, where, why and how the first bats become airborne is another mystery buried by Deep Time. ...What came before is only speculative."
Reference:
https://www.smithsonianmag.com/science-nature/bats-evolution-history-180974610/