GIBBES, R.W. (1847)
Description of new species of Squalidae from the Tertiary beds of South Carolina. Proceedings of the Academy of Natural Sciences of Philadelphia, 3: 266–268
GIBBES, R.W. (1849)
Monograph of the fossil Squalidae of the United States. Art. 14. Journal of the Academy of Natural Sciences of Philadelphia, 1 (ser. 2): 191–206, pl. 25–27