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The phantoms of a high-seven - or - why do our thumbs stick out?
The earliest tetrapods had hands and feet with up to eight digits but this number was subsequently reduced during evolution. It was assumed that lineages with more than five digits no longer exist but investigations of clawed-frogs now indicate that they posses a rudimentary or atavistic sixth digit...
| Autores principales: | , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
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BioMed Central
2015
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| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4570229/ https://www.ncbi.nlm.nih.gov/pubmed/26379756 http://dx.doi.org/10.1186/s12983-015-0117-x |