Selaginella and Desfontainia, are what kind of item?
Selaginella Selaginella is the sole genus of primitive vascular plants in the family Selaginellaceae, the spikemosses or lesser clubmosses.
Dosinia Dosinia is a genus of saltwater clams, marine bivalve molluscs in the family Veneridae, subfamily Dosiniinae . The shell of "Dosinia" species is disc-like in shape, usually white, and therefore is reminiscent of the shells of Lucinid bivalves.