Coal Balls: Preservers of Organisms That Lived in Ancient Swamps (CO-04)
The intricate preservation of both plant, and less commonly, invertebrate animal fossils or insects has intrigued several generations of geologists and paleo-botanists. Coal balls have enabled scientists to learn more about organisms that lived in ancient swamps. Comparison of coal-ball material and samples of modern peat has shown significant differences in the plant groups but very small differences in the peat-forming process.
Our Hoosier State Beneath Us: Coal