A relatively new area of controversy is the discovery of soft tissues in dinosaur fossils.
The state of these discoveries changes every few years, so some of the standard science web sites have not kept up.
Holding to a literal interpretation of Genesis, young earth creationists circulate about a hundred of these arguments for a young earth.
Most of these claims have been around for several decades, and have long since been addressed by mainstream scientists.
Heme is a small, relatively stable iron-containing molecule which gives blood its red color and is the key oxygen-carrying component of the hemoglobin protein. in the abdomen of a 46-million-year-old mosquito fossil.