Macroschisma productum

Macroschisma productum, common name the elongated keyhole limpet, is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets and slit limpets. == Description == The length of the shell varies between 22 mm and 40 mm. == Distribution == This marine species occurs in the following locations: Madagascar New South Wales, Victoria, South Australia, Western Australia and Tasmania. == References == == External links == Biodiversity Heritage Library (6 publications) World Register of Marine Species "Macroschisma producta". Gastropods.com. Retrieved 16 January 2019.