For example, in the Dinosaur Park Formation, fossil hadrosaur eggshell is rare because the breakdown of tannins from local coniferous vegetation would have caused the ancient waters to become acidic.
Fossil hadrosaur eggshell is rare. This is in the Dinosaur Park Formation. This is for example. The breakdown of tannins from local coniferous vegetation would have caused the ancient waters. This was to become acidic.