FIG. 3 in A new look at the Cretaceous Lamprey Mesomyzon Chang, Zhang & Miao, 2006 from the Jehol Biota

FIG. 3. — Mesomyzon mengae Chang, Zhang & Miao, 2006, head, branchial region, and fins. Photographs of: A, IVPP V 15027A; B, IVPP V 15035A; photograph (C) and line drawing (D) of IVPP V 15449; photograph (E) and line drawing (F) of IVPP V 15450.3; G, photograph of the tail of IVPP V 15449, the arrow points to the anal fold; H, close-up of middle trunk of IVPP V 14981B. Abbreviations: ac, annular cartilage; adc, anterior dorsal cartilage; adf, anterior dorsal fin; ao, anterior pillar of subocular cartilage; ap, apicalis and the laminae it carries; atr, naso-hypophysial atrium; ba, imprints of brain; bb, branchial basket; cot, circumoral teeth; da, dorsal aorta; dt, detritus in intestine; eh, extra hyal arch; m, mouth; gp1, gp7, 1st and 7th gill pouch; il, infraoral lamina; lv, liver; no, external narial opening; nhp, hypophysial pouch; gl, gill filaments; gf(l, r), gill filaments of left and right gills; gp, infillings of gular pouch; lo, olfactory organ; my, myomeres; nlp, posterior lateral nerve; ns, nasal sac; oc, otic capsule; oca, oral cavity; op, oral papillae; of, oral fimbriae; p, piston cartilage; paf, preanal skin fold; pc, pericardial cartilage; pdc, posterior dorsal cartilage; sl, supraoral lamina; st, styliform; tel, telencephalon; vs, velar skeleton; I, olfactory nerve or tract; V1, ophthalmic ramus of trigeminal nerve; VII. uc, buccal ramus of facial nerve; VII.rec, recurrent ramus of facial nerve surrounding labyrinth; IX, glossopharyngeus nerve; X, vagus nerve. See Figure 2 for other abbreviations. Anterior facing left in all figures. Scale bars: 10 mm.