The feathers were clipped and plucked from the cranial intermandibular region to caudal to the epibranchial
bones, and the skin was surgically prepared.
35] Subdistal process of second epibranchial (Costa 2004a) (CI: 1.
36] Uncinate process of third epibranchial (modified from Costa 1998a, b) (CI: 1.
Some of the character states in Notocheirus (including lack of first dorsal, mesethmoid, first epibranchial and epural) could be interpreted as paedomorphism (eg.
Hyobranchial apparatus: Comprising median unpaired glossohyal, basihyal, three basibranchials and urohyal; and bilaterally paired dorsal and ventral hypohyals, anterior and posterior ceratohyals, interhyal, six branchiostegal rays, three hypobranchials, five ceratobranchials, four epibranchials and three pharyngobranchials (Fig.
By the time the embryo reaches 14 mm in length, the geniculate ganglion and the greater superficial petrosal nerve are well defined, and the epibranchial
placode has disappeared.
Gill rakers externally on first gill arch, 1 in angle or associated distally on epibranchial, 4 (7), 5 (3) on ceratobranchial.
Gill rakers externally on first gill-arch, one in angle or associated with distal end of epibranchial, 4 (5), 5 (3) ceratobranchial.