spirifer

noun

spi·ri·fer

ˈspīrəfə(r)

capitalized : a large genus (the type of the family Spiriferidae) of articulate brachiopods that have the arms supported within the shell by long spirally coiled spiralia which form a pair of cones with their apexes directed more or less laterally toward the ends of the long hinge line and that abound in Silurian, Devonian, and Carboniferous formations

or spiriferid

spīˈrifərə̇d

plural -s [spiriferid from New Latin Spiriferidae family of brachiopods, from Spirifer, type genus + -idae] : any brachiopod of Spirifer or a related genus

called also spire-bearer