Bertha E. Martin's scientific contributions

Citations

... Xenarthran teeth are unusual in several aspects. Above, it has already been mentioned that they generally are devoid of enamel; despite the great systematic diversity of fossil xenarthrans, only two Eocene armadillo species show remnants of enamel (Simpson 1932;Ciancio et al. 2014), likewise do the milk teeth of the extant genus Dasypus (Martin 1916). The reasons for xenarthran teeth becoming enamelless are still not solved, however, the fossil record in armadillos shows that this happened synchronous with teeth becoming rootless and continuously growing. ...