You may be familiar
with Mark Armitage, the Christian microscopy technician formerly at California State University Northridge, who (allegedly) discovered
soft tissue in the horn of a fossilized triceratops just a few years ago, ended
up having his employment terminated over it, and subsequently sued the
university.
The presence of soft tissue might be taken to imply that at least one triceratops was around much more recently than 65.5 million years ago, the time frame currently posited for the much-debated dino extinction event, whatever that may have been.
In short, if legitimate, Armitage’s discovery would be hard to account for under the current evolutionary paradigm.