The ammocoetes (AM oh sete ease) is the vertebrate most like the most vertebrate-like invertebrate. As a vertebrate with striking similarities to a non-vertebrate it is an important evolutionary link supporting the hypothesized close relationship between protochordates and vertebrates.

What are the importance of ammocoete larva in evolutionary studies?

The ammocoete larva has several properties of ancient chordates as well as those of vertebrates. The larva has dorsal nerve chord, nervous system, gills, brain, eyes as well as notochord. The development and metamorphosis of this larva is important for the evolution of the petromyzon fish.

What is an ammocoete larva?

/ (ˈæməˌsiːt) / noun. the larva of primitive jawless vertebrates, such as the lamprey, that lives buried in mud and feeds on microorganisms.