FIG. 4 in The anatomy of Euphanerops longaevus Woodward, 1900, an anaspid-like jawless vertebrate from the Upper Devonian of Miguasha, Quebec, Canada

FIG. 4. — Euphanerops longaevus Woodward, 1900; Escuminac Formation, lower Frasnian (Upper Devonian), Miguasha, Quebec, Canada;specimens photographed in immersion in water,and showing the characteristic aspect of the anterior part of the head when collapsed in lateral aspect, with the "head stains" overhanging the anterior limit of the branchial apparatus: part (A) and counterpart (B) of an imperfect specimen (MHNM 01-69A,B), designated by Arsenault & Janvier (1991) as the paratype of Legendrelepis parenti (see details of the "head stains" in Figure 38); C, imperfect specimen (MHNM 01-130). Scale bars: 10 mm.Published as part of Janvier, Philippe & Arsenault, Marius, 2007, The anatomy of Euphanerops longaevus Woodward, 1900, an anaspid-like jawless vertebrate from the Upper Devonian of Miguasha, Quebec, Canada, pp. 143-216 in Geodiversitas 29 (1) on page 151, DOI: 10.5281/zenodo.537745