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cosmoid

British  
/ ˈkɒzmɔɪd /

adjective

  1. (of the scales of coelacanths and lungfish) consisting of two inner bony layers and an outer layer of cosmine

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of cosmoid

C20: from cosm ( ine ) + -oid