Nucleotide Sequences
| ichthyomyzon castaneus | USA: Arkansas, Miller, Four mile Creek ar Co. Rd. 10, ca. 2 mi W of Ferguson | 339770037 | ||
| ichthyomyzon castaneus | USA: Arkansas, Miller, Four mile Creek ar Co. Rd. 10, ca. 2 mi W of Ferguson | 339770035 | ||
| ichthyomyzon castaneus | USA: Arkansas, Randolph, Current River at Private Fishing Club Access on Hwy 211, just S of Currentview | 339770033 | ||
| ichthyomyzon castaneus | USA: Arkansas, Montgomery, Caddo River at Vo. Rd. 8, just W of Caddo Gap | 339770029 |