Science
Evolution of a smile: 400 million year old spiny fish overturns shark theory of tooth origins – The Conversation UK
Scientists have long believed that sharks were the first vertebrates to evolve teeth. Our new study reveals a more complex history.
Teeth play a central role in the ecology of most vertebrates for catching prey, processing food and even attracting a mate. Its no surprise that scientists such as ourselves have long been interested in how teeth first evolved.
For many years we regarded shark teeth, with their conveyor belt system of tooth replacement, as ancestral models for teeth.
But recent advances in our field of research revealed that a group of spiny fishes known as the acanthodians were the first ancestors of modern-day…
-
Noosa News23 hours agoMeasles alert issued across popular south-east attractions
-
General23 hours agoSector warns Coalition’s plan to limit overseas students ‘straight out of Trump’s playbook’
-
Noosa News7 hours agoMeasles alert: Australia Zoo, Hospital ED, Sushi Hub, Holey Moley Mini Golf and train stations among QLD infection sites
-
Business11 hours agoBattle of the ASX ETFs: Why has VGS outperformed VTS this year?