Oops! The Brontosaurus Never Even Existed: https://www.npr.org/2012/12/09/166665795/forget-extinct-the-brontosaurus-never-even-existed
Another Dinosaur That May Have Never Existed: https://fivethirtyeight.com/features/the-biggest-dinosaur-in-history-may-never-have-existed/
I saw a blurb of people a few years ago claiming that dinosaurs never existed - one other problem they brought up is that a full skeleton of a dinosaur has never been found, which was only coincidentally found last year allegedly (after people were complaining about a full model not having been found): https://www.forbes.com/sites/davidbressan/2020/08/28/150-years-after-its-discovery-the-first-complete-dinosaur-skeleton-ever-found-has-finally-been-studied-in-detail/
Some other issues brought up:
Dinosaur bones only apparently started being found in the 19th century coincidentally around the time the theory of evolution was being promoted
A lot of the models on display allegedly in museums are reconstructions and plasters, with the actual bones being kept archived
According to this link: https://www.quora.com/How-many-dinosaur-fossils-have-humans-found
"only about 3,000 full dinosaur skeletons or skulls in museums [in the U.S.], and only about 12,000 total discovered around the world."
linked from: https://slate.com/news-and-politics/2009/08/will-we-ever-run-out-of-dinosaur-bones.html
Proposed types of dinosaurs: https://www.thoughtco.com/main-dinosaur-types-1091963
What do you think of dinosaurs and our current understanding of them?
I don't personally think specific creatures are enough to say that all creatures were dinosaurs. Just like giants walked the earth doesn't mean every being was a giant. Isaiah 40:22 "He sits enthroned above the circle of the earth, and its people are like grasshoppers. He stretches out the heavens like a canopy, and spreads them out like a tent to live in." Is this what you were referring too by chance?