Fossils provide a vital record of ancient life, preserved primarily within sedimentary rocks . The journey from death to discovery involves rapid burial, lithification, and chemical replacement.

Through careful study of an ancient ancestor of modern turtles, researchers now have a clearer picture of how the turtles' most unusual shell came to be. The findings help to fill a 30- to ...

Skeleton season may be just around the corner, but the skeleton age dawned with the early Cambrian Period, about 538 million to 506 million years ago. In this time span, most major animal groups ...

Spain discovers four 72-million-year-old dinosaur eggs in Guadalajara, preserved like authentic “time capsules.” ...

Imagine there are ten different types of shells, each the size of a grain of sand, mixed in the bowl of mud in front of you. You want to find each type of individual shell —what do you do? For ...

Scientists have identified a mineral signature for sites that are more likely to contain rare fossils that preserve evidence of soft tissue — essential information to understanding ancient life. Much ...

Three undergraduate students from the University of Arkansas made a world-class discovery this week when they uncovered a 325-million-year-old nautiloid fossil just yards from two of ...

A collection of fossil shells from marine snails and clams is challenging a theory that says the world’s deadliest mass extinction was accompanied by severe ocean acidification. Instead of showing ...

ALTHOUGH Wells 1 and Scrutton 2 suggested methods of studying fossils to determine probable changes in day length, few studies have followed these suggestions. We have examined fossil bivalve shells ...