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 ...

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 ...

A new study shows how scientists can use animals' physical features -- also known as morphology -- to make connections between a modern species and its fossilized relatives, even if they look ...

A fossil of the Eunotosaurus displays the earliest known stages of evolution that have led to the modern turtle, including nine broadened ribs and a lack of intercostal muscles.