A remarkable tailed arachnid found in the mid-Cretaceous (approximately 100 million years ago) Burmese amber of Myanmar documents a key transition stage in spider evolution. Chimerarachne yingi resembles a spider in having fangs, male pedipalps, four walking legs and silk-producing spinnerets at its rear. However, it also bears a long tail. Image credit: Dinghua Yang. Despite its appearance, the new arachnid is not a direct ancestor of modern day...
