extinction
The end-Cretaceous mass extinction eliminated many groups. This topic is part of Biology within Science & Nature. This page currently draws on 16 supporting questions, with answers and bonus facts available below.
extinction trivia questions
Extinction occurs when what disappears completely?
Answer: A species
Bonus fact: A species is extinct when no living individuals remain.
What event ended the age of non-avian dinosaurs about 66 million years ago?
Answer: Mass extinction
Bonus fact: The end-Cretaceous mass extinction eliminated many groups.
What term describes extinction occurring at an unusually high global rate across many groups?
Answer: Mass extinction
Bonus fact: Mass extinctions reshape ecosystems worldwide.
Ammonites disappeared in the mass extinction at the end of which period?
Answer: Cretaceous
Bonus fact: They vanished about 66 million years ago.
What conservation strategy helped rescue California condors from near extinction?
Answer: Captive breeding and reintroduction
Bonus fact: All remaining wild condors were brought into captivity in the 1980s.
What impact site is linked to dinosaur extinction?
Answer: Chicxulub crater
Bonus fact: The crater lies beneath Mexico's Yucatán Peninsula.
Which geological boundary marks the mass extinction that ended the age of non-avian dinosaurs?
Answer: K-Pg boundary
Bonus fact: The Cretaceous-Paleogene boundary dates to about 66 million years ago.
About how many million years ago did the end-Cretaceous mass extinction wipe out all non-avian dinosaurs?
Answer: 66 million years ago
Bonus fact: Smithsonian says the scientific consensus attributes the end-Cretaceous mass extinction to environmental consequences of a large asteroid impact near what is now Mexico.
Which of the “Big Five” mass extinctions was the largest known extinction event in Earth’s history?
Answer: End-Permian extinction
Bonus fact: The end-Permian extinction occurred about 252 million years ago.
Which once-diverse marine arthropod group disappeared completely in the end-Permian mass extinction?
Answer: Trilobites
Bonus fact: The end-Permian event also devastated many other marine and terrestrial groups.
About when did the Late Triassic mass extinction occur?
Answer: 199 million years ago
Bonus fact: The event coincided with massive volcanic eruptions along margins of what is now the Atlantic Ocean.
Non-avian dinosaurs went extinct about how many million years ago?
Answer: 66 million
Bonus fact: The extinction marks the end of the Cretaceous.