Comment by Willingham

Researchers Thomas G. Kaye, Gary Gaugler and Zbigniew Sawlowicz found that Schweitzer's samples(The T-Rex soft tissue you mention) contained framboids, and the apparent soft tissue was essentially pond scum. Through carbon dating, the team also determined that the material was modern, not prehistoric. http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjourna...