Figure 7. Holotypic anterior dorsal neural arch of H. allocotus (HBV-20001) from the Upper Cretaceous of Shanxi, China.

In (A) anterior, (B) dorsal, and (C) left lateral views with interpretive line drawings. Note that the post. spdl is broken dorsally in (B). Abbreviations: ant. spdl, anterior spinodiapophyseal lamina; cam, camellate internal pneumaticity exposed on broken surface; cdf, centrodiapophyseal fossa; cprl-f, centroprezygapophyseal lamina fossa; cpol, centropostzygapophyseal lamina; ftd, flat-topped diapophysis; lprz, left prezygapophysis; pocdf, postzygapophyseal centrodiapophyseal fossa; podl, postzygodiapophyseal lamina; post. spdl, posterior spinodiapophyseal lamina; rdi, right diapophysis; rprz, right prezygapophysis; spdl-f, spinodiapophyseal lamina fossa; sprl, spinoprezygapophyseal lamina. Dashed lines indicate broken bone margins.