OSTRACODERM Scrabble 16 Words With Friends 18 Scrabble letter values: O1S1T1R1A1C3O1D2E1R1M3 = 16 Definition noun extinct fish-like jawless vertebrate having a heavily armored body. Examples “of the Paleozoic” See all 869 words you can make from OSTRACODERM → 11-letter words Words starting with O Words ending with M ← Unscramble different letters