#  Gallery 

 



 ![sem_tooth.jpg](/sites/g/files/omnuum1661/files/drgreen/files/sem_tooth.jpg)

 

*Scanning electron microscopy (SEM) images show hydroxyapatite mineral, calcium, phosphorus, oxygen and carbon concentrations in a growing herbivore tooth.*

 ![Tooth microstructure detail](/sites/g/files/omnuum1661/files/drgreen/files/james_sem_sheep_tooth.jpg)

 

*SEM image shows mineral density and crystallite microstructure in a mineralizing herbivore tooth.*

 ![Silver phosphate precipitation](/sites/g/files/omnuum1661/files/drgreen/files/20140803_caf2_200_hf1c.jpg)

 

*Silver phosphate crystals used for tooth phosphate oxygen isotope analysis.*