While researching a topic, a student has taken the following notes:
- The false killer whale is a mammal species.
- It was believed to be extinct until a living false killer whale was identified in Denmark in 1861.
- The Banggai crow is a bird species.
- It was believed to be extinct until a living Banggai crow was identified in Indonesia in 2007.
- They are considered Lazarus species.
- “Lazarus species” is a term for living species of organisms that were once believed to be extinct.