His research focuses mainly on skull mechanics and feeding apparatus in reptiles such as the new zealand tuatara ( sphenodon ) .

他的研究领域主要集中于头骨力学以及爬行动物的进食方式，例如新西兰大鳄蜥。

After using a method called geometric morphometrics to compare the skulls of modern sphenodon with thirteen of its fossil relatives , the biologists found that the tuatara is actually quite different from its prehistoric forebears .

在使用了一种叫做几何形态测量法的方法比较现代斑点楔齿蜥和十三种近亲化石的头骨后，生物学家发现刺背鳄蜥实际上完全不同与史前的祖先。