We've barely scratched the surface of the fossil record. What are paleontologists still missing?
, paleontologists found that dinosaurs that weighed more than 130 pounds are often found at about 78 percent completeness while those below 130 pounds are usually found at about 7.6 percent completeness. Evidently, ancient ecosystems were much harsher on small specimens, masking how numerous they were in thriving times.as well.
According to one estimate, more than 70 percent of discoverable dinosaur species are still hidden beyond detection. Of course, it’s a wonder that we know about any dinosaurs at all. Every single fossilized skeleton or footprint has beaten long odds to tell us about ecosystems that we’ll never get to experience directly. Details of how these ancient habitats changed are critical to debates on whether dinosaurs were flourishing or struggling as the great Age of Dinosaurs approached its closing act 66 million years ago.
For example, paleontologists used to wonder why there seemed to be far more dinosaur species roaming western North America 75 million years ago than 66 million years ago, just prior to
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