Galeodea echinophora, the Spiny Bonnet or Helmet shell, is a species of large sea snail, a marine gastropod mollusk in the family Cassidae, the helmet snails and bonnet snails. The fossil record of this species dates back from the Miocene to the Quaternary (age range: 23.03 to 0.781 million years ago). These fossils have been found in India, Spain and Italy.