FIG. 9 in The anatomy of Euphanerops longaevus Woodward, 1900, an anaspid-like jawless vertebrate from the Upper Devonian of Miguasha, Quebec, Canada

FIG. 9. — Euphanerops longaevus Woodward, 1900; Escuminac Formation, lower Frasnian (Upper Devonian), Miguasha, Quebec, Canada; attempted three-dimensional reconstruction of the structure of a mineralized gill arch (the transverse section is slightly oblique, to show the more spherical shape of the internal chondrocyte spaces). Scale bar: 1 mm.