3.3" Plate of Silurian Fossil Algae (Kalania) Fossils - Estonia

Kalania pusilla is an exceptionally preserved, non-calcified dasycladalean alga that's found in the Lower Silurian-aged Kalana Lagerstätte of Estonia. Described in 2015 by paleontologists O. Tinn, V. Mastik, L. Ainsaar, and T. Meidla, it is famous for containing the oldest documented gametophores (reproductive structures) in its plant group. Because typical fossil algae rely on hard, calcified structures to leave records, Kalania pusilla is a rare find. It survived as a non-calcified alga due to unique environmental conditions at the Lagerstätte, which allowed for the preservation of its fine, delicate internal anatomy and reproductive organs.