Absalão, R.S. & de Paula, T.S. (2004) Shell morphometrics of three species of gadilid Scaphopoda (Mollusca) from the Southwestern Atlantic Ocean: comparing the discriminating power of primary and secondary descriptors. Zootaxa, 706 (1), 1–12.
https://doi.org/10.11646/zootaxa.706.1.1