(n.) A genus of crinoids belonging to the Blastoidea. They have five petal-like ambulacra.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). pentremites. Retrieved September 24, 2026, from http://smartdefine.org/pentremites/definitions/2043516 |
| Chicago | Webster's. 2011. "pentremites" http://smartdefine.org/pentremites/definitions/2043516 (accessed September 24, 2026). |
| Harvard | Webster's 2011, pentremites, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/pentremites/definitions/2043516>. |
| MLA | Webster's. "pentremites" 27 May 2011. Web. 24 September 2026. <http://smartdefine.org/pentremites/definitions/2043516> |