Scientists predict that sponges—among the most basic animals—arose a few hundred million years before the occurrence of the oldest confirmed fossil specimens, which date to about 500 million years ago ...

If you fill a sponge with saltwater and let it dry, the salt is left behind in the sponge's pore spaces. If the sponge broke down but the salt remained and held its shape, we would call that a ...

1. Identify a fossil as a sponge, archeocyathid, rugose, tabulate or scleractinian coral. 2. Know the skeletal structure and material of each of these animals. 3. Know the ecological characteristics ...

These are diverse 444 million-year-old sponges from the Anji Biota of China, thriving as everything around them died. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news ...

Scientists have created a new sponge-type material that absorbs carbon ... have the potential to bridge the gap between the use of fossil fuels and new energy sources such as hydrogen, and could ...