While researching a topic, a student has taken the following notes:
- Dysphania pusilla is a plant species.
- It was believed to be extinct until a living specimen was identified in New Zealand in 2015.
- Pseudorca crassidens is a mammal species.
- It was believed to be extinct until a living specimen was identified in Denmark in 1861.
- They are considered Lazarus species.
- “Lazarus species” is a term for living species of organisms that were once believed to be extinct.