The forests of the Late Carboniferous period (about 300-320 million years ago) harbored a great variety of arachnids. In addition to the familiar spiders,...
A team of paleontologists from the United States has determined that Tullimonstrum gregarium (popularly known as the Tully monster) — a large soft-bodied...
This Northern Cardinal (Cardinalis cardinalis) has female plumage on its right, and male plumage on its left, a condition known as bilateral gynandromorph.
Halfsider...
