The origins of the neural crest. Part II: an evolutionary perspective

Abstract

The neural crest and cranial ectodermal placodes are traditionally thought to be unique to vertebrates; however, they must have had evolutionary precursors. Here, we review recent evidence suggesting that such ancestral cell types can be identified in modern non-vertebrate chordates, such as amphioxus (a cephalochordate) and ascidians (urochordates). Hence, migratory neuroectodermal cells may well have been present in the common ancestor of the chordates, such that the possibility of their existence in non-chordate deuterostomes (hemichordates and echinoderms) must also be considered. Finally, we discuss the various non-neuronal cell types produced by the neural crest in order to demonstrate that it is plausible that these different cell types evolved from an ancestral population that was neuronal in nature.

DOI: 10.1016/S0925-4773(97)00129-9

Extracted Key Phrases

7 Figures and Tables

Statistics

0204060'99'01'03'05'07'09'11'13'15'17
Citations per Year

219 Citations

Semantic Scholar estimates that this publication has 219 citations based on the available data.

See our FAQ for additional information.

Cite this paper

@article{Baker1997TheOO, title={The origins of the neural crest. Part II: an evolutionary perspective}, author={Clare V. H. Baker and Marianne Bronner-Fraser}, journal={Mechanisms of Development}, year={1997}, volume={69}, pages={13-29} }