Latest Demosponge Stories
U.S. scientists say they have found fossil evidence of animals living on Earth more than 635 million years ago, the oldest such finds. Researchers from the University of California-Riverside, the Massachusetts Institute of Technology and other institutions used compounds preserved in sedimentary rocks to confirm the existence of demosponges. Demosponges appeared during the Neoproterozoic era, 1,000 to 542 million years ago, an era of climatic extremes and biological evolutionary developments...
- A spider.
- Figuratively, a peevish, testy, ill-natured person.