The slug-like creature likely scooted along the ocean floor with a muscular foot more than 500 million years ago.

Elphidium found at the beach of Heldsbach, Papua New Guinea - Size: 550µm SEM Elphidiums are single celled organisms of the class Foraminifera. Forams live in great abundance in todays oceans and are in the fossil-record at least since the Cambrium (542.000.000 years BC). www.foraminifera.eu/art-elphidium-crispum-heldsbach.html