Context: The lower (Triassic) boundary is set by the Permian–Triassic extinction event, during which approximately 90% to 96% of marine species and 70% of terrestrial vertebrates became extinct. It is also known as the "Great Dying" because it is considered the largest mass extinction in the Earth's history. The upper (Cretaceous) boundary is set at the Cretaceous–Tertiary (KT) extinction event (now more accurately called the Cretaceous–Paleogene (or K–Pg) extinction event), which may have been caused by the impactor that created Chicxulub Crater on the Yucatán Peninsula. Towards the Late Cretaceous large volcanic eruptions are also believed to have contributed to the Cretaceous–Paleogene extinction event. Approximately 50% of all genera became extinct, including all of the non-avian dinosaurs.

Question: What event sets the boundary for the Triassic?
Answer: Permian–Triassic extinction

Question: What percentage of marine life died during the extinction?
Answer: 90% to 96%

Question: How many terrestrial species died during the extinction?
Answer: 70%

Question: What is the largest extinction of species in Earth's history known as?
Answer: Great Dying

Question: What is the possible cause of the upper Cretaceous extinction event ?
Answer: K–Pg) extinction

Question: What percentage of marine life growth happened during the Permian–Triassic era?
Answer: Unanswerable

Question: How many terrestrial species were created during the Permian–Triassic era?
Answer: Unanswerable

Question: Large volcanic eruptions contributed to the expansion of what period?
Answer: Unanswerable

Question: What percent of terrestrial vertebrates became extinct on the Yucatán Peninsula?
Answer: Unanswerable

Question: What percentage of all genera thrived during the Cretaceous–Paleogene era?
Answer: Unanswerable