FIGURE 14.

Premotor neuron population 2 (PN2) in five mochokid species. A second premotor population of neurobiotin‐labeled neurons (green), PN2, was located ventrolateral to the anterior part of the protractor nucleus in the five mochokid study species. PN2 was most extensive in S. grandiops. The positions of protractor motoneuron (MN) and smaller PN1 somata are also apparent in all species except for S. nigriventris (but see Figure 7d). A, axons. CC, central canal. Scale bar represents 50 μm [Color figure can be viewed at wileyonlinelibrary.com]