The
interhyal and epihyal begin ossifying at 17 DPH followed by the ceratohyal and basihyal at 23 DPH.
the presence of distinct, strong ligaments connecting the anterior surface/anterior cartilage of autopalatines and/or dermopalatines and maxilla and/or premaxillae (160: 0 [right arrow] 1) and the presence of an ossified interhyal (223: 0 [right arrow] 1).
Two other features with ambiguous distributions that may possibly also represent elopomorph synapomorphies are the presence of distinct, strong ligaments connecting the anterior surface/anterior cartilage of the autopalatines and/or dermopalatines and the maxillae and/ or premaxillae (160: 0 [right arrow] 1) and the presence of an ossified interhyal (223: 0 [right arrow] 1) (see 'Clade C1' above).
Consequently, Rivulus was considered to be the sister group to a clade including "Rivulus" and all other rivulids, which was diagnosed by an apomorphic cartilaginous
interhyal (vs.
These were the sagittal otolith (OTO), as well as the
interhyal (INTE), hypobranchial 3 (HYPO), pharyngobranchial 2 (PHAR), angular (ANGU), quadrate (QUAD), and the dentary (DENT).
the ossification of the ligament connecting the suspensorium to the ethmoid region (190: 0 [right arrow] 1) and the
interhyal (ossified or not) being connected by ligaments to both the hyoid arch and the suspensorium (225: 0 [right arrow] 1) (see Appendix 2).
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.10).
Bones included the angular (ANG), quadrate (QUAD),
interhyal (INTE), dentary (DENT), pharyngobranchial 2 (PHAR), and hypobranchial 3 (HYPO) (Fig.
Well-developed, somewhat triangular bone connected, by means of two strong ligaments, to the postero-ventral edge of the mandible and to the
interhyal, respectively.
All were from the cranium region (see Zeppelin et al., 2004, this issue) and included the sagittal otolith (OTO), as well as the
interhyal (INTE), hypobranchial 3 (HYPO), pharyngobranchial 2 (PHAR), angular (ANGU), quadrate (QUAD), and the dentary (DENT).
This triangular bone is linked by ligaments to the angulo-articular,
interhyal and interopercle.