cephalaspid Cephalanthus • cephalaspida · · · Info · Definitions · Synonyms · Characters · · cephalaspid · · Text Latin · · Script 11 · · Length 4 · · Syllables Definitions · · · (noun) extinct jawless fish of the Devonian with armored head. Synonyms: osteostracan. · · Noun Definition 1 Synonyms · · · osteostracan · · Synonym 1 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C p latin small letter p U+0070 s latin small letter s U+0073