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Is the vertebrate head segmented?—evolutionary and developmental considerations
Because of its basal position on the phylogenetic tree of vertebrates, the lamprey embryo would be expected to exhibit segmental head mesoderm. Recent observations, however, show that the lamprey does not have any somite-like segments in the head. Coelomic head cavities that are most conspicuous in...
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| Formato: | Texto |
| Lenguaje: | English |
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Oxford University Press
2008
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| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2895337/ https://www.ncbi.nlm.nih.gov/pubmed/20607133 http://dx.doi.org/10.1093/icb/icn015 |