Nicholas Davis found several fossils in the San Joaquin Formation near Avenal, California, including two types of clams (Pelecypod and Planicardium virginianum) and snails (Gastropods). These fossils represent species that still exist today and live in similar ways, burrowing in sediment and feeding on phytoplankton. Nicholas had fun with this project and learned more about the fossils, though he has not yet determined their exact age.