oscarellid

English

Noun

oscarellid (plural oscarellids)

1. (very rare) Any marine sponge of the family Oscarellidae.
   • 2012, Claus Nielsen, Animal Evolution: Interrelationships of the Living Phyla, page 31:

     The plakinids have siliceous spicules, the diagnostic type being the calthrop tetractine, whereas the oscarellids lack a skeleton (Muricy and Díaz 2002).