The Triassic, famously experimental in vertebrate evolution, lasted ~50 million years after a huge mass extinction. The Cenozoic period spans 66 million years from a large mass extinction.

So lets play a game and assume the geologically modern day is still full of strange, laughable ideas that would give God Himself, if one existed, cringey flashbacks on long car rides. What would be in those flashbacks?

I want to know the best bad ideas of recent times. The ones that were (or are) doomed to failure. What modern or recent creatures might future palaeontologists look back on as primitive? What might be the late Cenozoic equivalent of Tanystropheus, Atopodentatus, Drepanosaurus or Shaviropteryx?