Figure 2 in A true caudal fin or not? New insights in the evolution of the gadiform caudal fin

Figure 2. Caudal fin in Lota lota, adult and early development from cleared and stained specimens. A, schematized drawing of adult condition, light grey:bones, grey:fin rays, dark grey:cartilage; B, 6.5 mm total length (TL); C, 7.2 mm TL; D, 10.2 mm TL; E, 11.4 mm TL; F, 14.2 mm TL; G, 15.3 mm TL. Abbreviations: asterisk, neural arch-like outgrowth; ff, larval fin fold; ha, haemal arch; hs, haemal spine; lt, lepidotrichia; na, neural arch; nc, notochord; ns, neural spine; t, terminal centrum; x, terminal dorsal element; y, terminal ventral element; * indicates haemal and neural spines associated with terminal centrum 3. There are two sets of asterisks used in this figure - is this referring to the asterisk in (A), or to those associated with the leưers na*/ns*/ha*.