adjective
- of, relating to, or resembling a crinoid (a marine animal with a cup-shaped body and feathery arms)
- composed of or containing crinoid fossils or fragments
Usage: technical; geology/paleontology
Usage: geology
Examples
- The crinoidal limestone contains abundant fossil remains from ancient sea creatures.
- Geologists identified crinoidal deposits in the sedimentary rock layers.
- The museum displayed a crinoidal fossil showing the distinctive cup and arm structure.
- Crinoidal material is commonly found in Paleozoic marine formations.