Early Cambrian fossils reveal how a small ... a tiny animal distantly related to modern brachiopod bivalves. Thousands of L. fasciculata shells have been found in a South Australian fossil ...

All animal evolution for the last half billion years has come from tinkering with these Cambrian body plans. Then, between about 570 and 530 million years ago, another burst of diversification ...

Bivalves have been around for a very long time. They turn up in the fossil record in the early Cambrian, more than 500 million years ago, but their roots go even deeper than that. Since evolving, ...