fossilizer

plural fossilizers

1. That which causes or undergoes fossilization.

   When they refuse, she turns her fossilizer ray on them then returns to the 25th century to dig them up.

   2015, Jonathan Clements, Helen McCarthy, The Anime Encyclopedia, 3rd Revised Edition

   1 more example

   Because their wood contains so much water, and fallen baobabs decompose so quickly, the trees are poor fossilizers.

   2007, Rupert Watson, The African Baobab, page 14