Mesodon thyroidus is a species of air-breathing land snail, a terrestrial gastropod mollusk in the family Polygyridae. Parasites Parasites of Mesodon thyroidus include: The nematode Parelaphostrongylus tenuis References External links Mesodon thyroidus on the UF / IFAS Featured Creatures Web site Polygyridae Gastropods described in 1816 Taxa named by Thomas Say