Complex sentence: One of the three species, "Pinus longaeva", is among the longest-lived life forms on Earth (see Pando); the oldest individual is more than 5,000 years old, making it the oldest known individual of any species.
Split into simpler sentences: One of the three species, "Pinus longaeva", is among the longest-lived life forms on Earth. The oldest "Pinus longaeva" is more than 5,000 years old, making it the oldest known individual of any species.