Why Frogs Survived the Asteroid That Wiped Out the Dinosaurs, Science

What characteristics did mammals have that allowed them to survive when the the dinosaurs died out? - Quora

New Study Reveals How Frogs Flourished after Dinosaurs Croaked — Naharnet

Opportunist' frogs flourished in wake of extinction of dinosaurs, becoming one of the most diverse of all species

Frogs: The largest group of amphibians

Frog evolution linked to dinosaur asteroid strike

Frogs Thrived in Aftermath of the Great Dinosaur Extinction

Earth's Major 'Mass Extinction' Events

Why Frogs Survived the Asteroid That Wiped Out the Dinosaurs, Science

Extinction event that wiped out dinosaurs cleared way for frogs – Research News