A new 130-million-year-old fossil "shakes up the evolutionary tree" of ichthyosaurs, which were ancient animals that look eerily like living swordfish.

With just a look Tiago R. Simões was sure a fossil was sui generis — and it turned out to belong to a previously unknown species of a lizard-like reptile, representing the earliest evolving member of a lineage that today includes all lizards, snakes, and their closest relatives.

"The new pterosaur, which we named Thapunngaka shawi... was essentially just a skull with a long neck, bolted on a pair of long wings."

New research suggests how to conserve rough-nosed horned lizards, which live only in Sri Lankan rainforests.

New research with a kind of softshell turtle could clarify the function of sex chromosomes in a vast number of organisms, say researchers.

New research with a kind of softshell turtle could clarify the function of sex chromosomes in a vast number of organisms, say researchers.

The salinity of the water in the Florida Everglades can threaten the survival of crocodiles, the results of 10,040 capture-and-release events show.

Snakes, hoping to eat eggs, sometimes ingest golf balls. New research looks at four case studies to determine the best treatment.

Researchers thought Pacific and Caribbean crocodile populations in Panama would be different species. Their genes tell a different story, one about the Ice Age.