FIGURE 3. Postcopemys repenningi, gen. and sp. nov. from the Maxum fossil site, Tassajera Formation, California; occlusal views of upper molars: 1, right M1 (UCMP 87535). 2, left M1 (UCMP 87958). 3, right M2 (UCMP 87950). 4, right M2 (UCMP 87543). 5, left M3 (UCMP 87525). 6, left M3 (UCMP 87496).