What are some fossil findings in recent years that have bridged major gaps in our understanding of vertebrate evolution?

Titaallik

Explanation:

One of the major archeological findings what that of the Titaallik. This is a monospecific genus of extinct sarcopterygian from the Late Devonian Period, roughly about 375 Mya. This species helped help us links marine mammals to their terrestrial ancestors since the Titaallik was a half-species which was a snake with legs. Thus linking modern snakes to their amphibious ancestors from which they descended.

we would need to see the picture to answer it