Thomas E. Dowling, Wesley M. Brown, Allozymes, Mitchondrial DNA, and Levels of Phylogenetic Resolution Among Four Minnow Species (Notropis: Cyprinidae), Systematic Zoology, Vol. 38, No. 2 (Jun., 1989), pp. 126-143
No takes yet. Share an insight, caveat, or question.
Dowling et al. (1989) studied this question.