Pentacrinus

noun
Pen·​tac·​ri·​nus | \ -nəs \

Definition of Pentacrinus

: a genus (the type of the family Pentacrinidae) comprising large stalked Jurassic crinoids having a small bowl-shaped calyx, strong numerously branched and pinnulate arms, and a pentangular stalk

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History and Etymology for Pentacrinus

New Latin, from penta- (from Greek) + -crinus

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Cite this Entry

“Pentacrinus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Pentacrinus. Accessed 16 Feb. 2020.

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