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Currently living:
Non-living:
- Possibly 250 million year-old bacteria, bacillus permians, were revived from stasis after being found in sodium chloride crystals in a cavern in New Mexico. Russell Vreeland, and colleagues from West Chester University in Pennsylvania, reported on October 18, 2000 that they had revived the halobacteria after bathing them with a nutrient solution. If they had survived for 250 million years, they would be the oldest living organisms ever recorded.[28] However, their findings date the crystal surrounding the bacteria, and DNA analysis suggests the bacteria themselves are likely to be less ancient.[29]
- A bristlecone pine nicknamed "Prometheus", felled in the Great Basin National Park in Nevada in 1964, found to be about 4,900 years old, is the longest-lived single organism known.[30]
- The quahog clam (Arctica islandica) is exceptionally long-lived, with a maximum recorded age of 507 years, the longest of any animal.[31] Other clams of the species have been recorded as living up to 374 years.[32]
- Lamellibrachia luymesi, a deep-sea cold-seep tubeworm, is estimated to reach ages of over 250 years based on a model of its growth rates.[33]
- Hanako (Koi Fish) was the longest-lived vertebrate ever recorded at 226 years.
- A Bowhead Whale killed in a hunt was found to be approximately 211 years old (possibly up to 245 years old), the longest lived mammal known.[34]
- Tu'i Malila, a radiated tortoise presented to the Tongan royal family by Captain Cook, lived for over 185 years. It is the oldest documented reptile. Adwaitya, an Aldabra Giant Tortoise, may have lived for up to 250 years.
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