Tiny Subjects Big Pictures
AH_Mandible of Common Shrew (Sorex araneus)_2.jpg
Mandible of Common Shrew (Sorex araneus) retrieved from soil under a Barn Owl (Tyto alba) roost. The red tooth enamel contains iron, which adds strength. The iron is concentrated in regions of the tooth that come under the most stress, specifically the chewing and grinding surfaces.