crinoidal
/kraɪˈnɔɪdəl/
adjective
- Relating to or consisting of crinoids, which are marine animals with a cup-shaped body and feathery arms, often found as fossils.
- Geologists studied the crinoidal fragments to learn about the ancient ocean environment.
- The crinoidal limestone in this quarry is full of ancient sea lily fossils.
- The museum displayed a beautiful slab of crinoidal marble with visible stem pieces.