References

Hentz, T. F., 1989. Depositional environments of the Early Permian coastal plain, North-Central Texas: a synopsis. In: R. W. Hook (ed.), Permo-Carboniferous vertebrate paleontology, lithostratigraphy, and depositional environments of North-Central Texas. Field Trip Guidebook, 2; Annual Meeting Soc. vert. Paleontol., 49: 22-39.