spiriferous
adjective
spi·rif·er·ous
(ˈ)spī¦rif(ə)rəs
1
a
: having a spiral part or organ
b
: spired
2
[spirifer + -ous] : containing or characterized by brachiopods of the suborder Spiriferacea —used especially of rock
Word History
Etymology
probably from New Latin spirifer spiriferous (from spir- + -fer -ferous) + English -ous