Marywadea is a genus of Ediacaran biota shaped like an oval with a central ridge.

It is a bilaterian organism as evidenced by its symmetry, vaguely resembling a very primitive trilobite.

The head is shaped as a semicircle and is the same width as the rest of the body.

[1] It is most often interpreted as an early arthropod, annelid, or a member of Proarticulata,[3] but as with all Ediacarian fauna its phylogeny remains uncertain.

The genus was established by Martin Glaessner in 1976, who named it after fellow paleontologist Mary Wade, with whom he had described the species ten years earlier.