Figure 9 in REVIEW Vertebrate origins are informed by larval lampreys (ammocoetes): a response to Miyashita et al., 2021

Figure 9. The three clades of ostracoderm fishes that had bony head shields, with impressions from or on the inner surfaces of these head shields. This shows my interpretations of the specific branchial arches and gill pouches, with yellow marking the first ones. A, heterostracan Protopteraspis (Simopteraspis) primaeva Kiaer, 1928 (after fig. 197A in Stensio, 1958); B, osteostracan Scolenaspis signata Wangsjo, 1952 (after fig. 7 in Janvier, 1985); C, galeaspid Shuyu zhejiangensis, natural endocast (after fig. 1a in Gai et al., 2011).Published as part of Mallatt, Jon, 2023, REVIEW Vertebrate origins are informed by larval lampreys (ammocoetes): a response to Miyashita et al., 2021, pp. 287-321 in Zoological Journal of the Linnean Society 197 (2) on page 297, DOI: 10.1093/zoolinnean/zlac086, http://zenodo.org/record/760944