What are ammonites, and how did they come to rule the prehistoric seas? What are ammonites, and how did they come to rule the prehistoric seas? Invertebrates are animals without a backbone or bony ...

More than 95% of Australian animals are invertebrates (animals without backbones—spiders, snails, insects, crabs, worms and others). There are at least 300,000 species of invertebrate in Australia. Of ...

Researchers have identified microscopic ancient creatures—dubbed "mold pigs"—in 30-million-year-old amber which represent not only a new species, but an entirely new family of invertebrates—animals ...

If you see a funky-looking blob while you’re fishing in Ohio, don't look away. It could be a colony of numerous animals. Invertebrates in this colony, known as the bryozoan or "moss animals," reside ...

Animals can be divided into groups. We call this 'classification'. Classification allows us to group animals together depending on their similarities and differences. Animals are divided into two main ...

The world's smallest known vertebrate is a frog the size of a housefly, a new study says. Scientists locate the teensy animals by listening for their calls and trying to zero in on the sources of the ...