Latest Cephalaspidomorphi Stories
New data on the initial diversification of jaws sheds light on early vertebrate feeding ecology More than 99 per cent of modern vertebrates (animals with a backbone, including humans) have jaws, yet 420 million years ago, jawless, toothless armour-plated fishes dominated the seas, lakes, and rivers. There were no vertebrates yet on land and the recently evolved jawed fishes were minor players in this alien world, some sporting unusual jaw shapes and structures that bear little physical...
- To talk saucily.
- Insolent, opprobrious language; impertinent abuse.