Turtles

Hunt, A. P. & Lucas, S. G., 1992, Stratigraphy, paleontology and age of the Fruitland and Kirtland Formations (upper Cretaceous), San Juan Basin, New Mexico, New Mexico Geological Society, New Mexico Geological Society 43 rd Annual Fall Field Conference Guidebook, pp. 217-239 : 225

Turtles

A large number of turtles are present in the Fruitland and Kirtland faunas ( Tables 5-7). Unfortunately, as is true of most Mesozoic faunas, most turtles are represented solely by shells. There is some debate about the utility of shells in turtle taxonomy ( e. g., Gaffney, 1972), and the diversity of turtle taxa listed here is probably inflated.