diprionidian /dī-prī-ə-nidˈi-ən/ (palaeontology)

Serrated on both sides (of graptolites)

• psychagogues
• psychasthenia
• psychasthenias
• psyche
• psyched
• psychedelia
• psychedelic
• psyches
• psychiater
• psychiaters
• psychiatric
• psychiatrical
• psychiatries
• psychiatrist
• psychiatrists
• psychiatry
• psychic
• psychical
• psychically
• psychical research
• psychic bid
• psychic determinism
• psychic force
• psychicism
• psychicisms