The genetic basis of air-breathing and limb movement was established in our fish ancestor 50 million years before vertebrates transitioned from water to land, report researchers. There is nothing new ...

A microorganism whose evolutionary roots can be traced to the era of the first multicellular animals may provide a glimpse of how single-celled organisms made a critical evolutionary leap. In ...

To study evolutionary morphings, scientists often look at teeth, which are well preserved and thus well represented in the fossil record. But scientists can do more than observe the traces left behind ...

Choanoflagellates are primitive microorganisms whose evolutionary roots can be traced to the era of the first multicellular animals (metazoans). In December 18 Proceedings of the National Academy of ...

Palaeozoic pteridospermales -- Glossopteridaceae and mesozoic pteridospermales -- Bennettitales (= Cycadeoideales) -- Pentoxylales -- Cycadales -- Cordaitles ...