31344368keratinous materialPT2026-03-30 20:32:52UF31344369material, keratinousNDBT31320453animal materialPTNT31374436featherPTNT31374438hornPTNT31374439tortoise shellPTNT31374442fish scalePTNT31374446baleenPTNT31374448[hair and hair components as materials]PTNT31374449quillPTNT31374450hoofPTNT31374451beakPTNT31374452hawksbill shellPTNT31374454turtle shellPT