What is "chinlechelys"

Chinlechelys ( meaning Chinle turtle) is an extinct genus of primitive turtle. It lived in the Norian age of the Late Triassic, and is the oldest turtle known from North America. Among turtle it is unique, mostly because of its very thin shell. The type and only species, C. tenertesta, was named and described with the genus by Walter G. Joyce et al. in 2009. It was probably terrestrial, and was found by Joyce et al. to be closely related to Proganochelys, another terrestrial testudinatan.