Chaetae are stiff bristles made of chitin that characterize many species of annelid worms.
Reconstruction of Shaihuludia shurikeni from the Spence Shale...
Archaeologists have unearthed an assemblage of 14 stemmed projectile points at the Cooper’s Ferry site, located on a terrace of the lower Salmon River...
Archaeologists have uncovered almost two hundred stone artifacts, including projectile points and flake tools, and bone fragments from large mammals at...
A new species of mastodon that lived during the Pleistocene period has been identified from fossil found in California and Idaho.
The Pacific mastodon...
A mostly complete and moderately well-preserved fossilized specimen is thought to represent the first Triassic horseshoe crab found in North America, according...
