Scientists have investigated lamprey embryos using cutting-edge microscopic techniques to reveal interesting insights about vertebrate head evolution, clarifying an unresolved mystery in basic science ...

From comparison of the eyes of lampreys and jawed vertebrates, it is clear that a 'vertebrate-style' camera eye was already present in the last common ancestor of these taxa, around 500 million years ...

Zebrafish (Danio rerio) is a small freshwater fish that is an extensively studied vertebrate model organism. It can be bred rapidly in large numbers, is amenable to genetics, and has a clear embryo, ...