Are there any fossils in igneous rocks?
Yes, but only “Mold” type fossils, that is fossils that are an impression of the original object. Examples can be found at Lava Tree natural park in Hawaii. In this case there are trees that are surrounded by lava that burns away the tree within while leaving a hollow impression of the tree. There are multiple examples of fossilized remains found in various ash based Tuffs, specific examples are Pompeii and Herculanium the voids found in the ash flow, multiple fossilized footprints.
