Fossilized genes
A turtle time capsule: DNA found in ancient shell
September 28, 2023
Paleontologists discover possible DNA remains in fossil turtle that lived 6 million years ago in Panama, where continents collide
Paleontologists discover possible DNA remains in fossil turtle that lived 6 million years ago in Panama, where continents collide
A 13-million-year-old saber-toothed marsupial skeleton discovered during paleontological explorations in Colombia is the most complete specimen recovered in the region
A groundbreaking study assessed the extinction risk of more than 8,000 amphibian species worldwide and concluded that two out of five amphibians are threatened.
Based on clues ranging from microscopic pollen samples to massive petrified trees and larger-than-life-sized turtle and crocodile fossils, my lab pieces together millions of years of evidence to reconstruct the deep-time history of tropical ecosystems. I help to build international networks of...
My primary research focus is on Panamanian frogs that are likely extinct in the wild due to a fungal infection but are kept alive in captive breeding programs in Panama and the United States. Our lab has collected founding individuals for these amphibian colonies, devised methods to sustainably...
A new study from the Smithsonian Tropical Research Institute (STRI) shows that red-eyed treefrog embryos hatch early when exposed to high ammonia levels — an environmental cue that it’s too hot and dry for the eggs to survive.
A new study finds that leatherback sea turtles tend to migrate rather than forage when chlorophyll, primary productivity, and sea surface temperature levels are lower.