PBS Eons 'Living Fossils' Aren't Really a Thing

What term did Charles Darwin coin to describe animals that have remained largely unchanged for millions of years?

• Timeless creatures

• Prehistoric animals

• Ancient species

• Living fossils

Which of the following is NOT an example of a 'living fossil' mentioned in the video?

• Nautiluses

• Coelacanths

• Ginkgo trees

• Tyrannosaurus rex

What is one problem with the term 'living fossil'?

• It suggests that some organisms do not evolve at all.

• It indicates that evolution is a recent phenomenon.

• It implies that all organisms evolve at the same rate.

• It means that fossils are still alive.

Which animal is used as an example of a species that has changed significantly over time?

• Nautiluses

• Jaguars

• Gray wolves

• Feathered dinosaurs

What type of predators are today's crocodylians?

• Aquatic ambush predators

• Land predators

• Aerial hunters

• Desert scavengers

Which period did croc-like ancestors called crocodylomorphs exist?

• Cretaceous Period

• Permian Period

• Triassic Period

• Jurassic Period

What is the name of the terrifying land carnivore from the Late Triassic Period?

• Dakosaurus

• Postosuchus

• Velociraptor

• Tyrannosaurus rex

What group of reptiles does the tuatara belong to?

• Rynchocephalians

• Crocodylians

• Lizards

• Dinosaurs

What did a 2008 study reveal about the tuatara's genetic change?

• It has not changed at all.

• It is faster than any other vertebrate.

• It is identical to its Jurassic relatives.

• It is slower than any other vertebrate.

What can show us that life is constantly evolving, even if anatomy does not?

• Bones

• Genes

• Habitats

• Fossils