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14 hpf Development

[ Back to Pharyngeal development: Pre-skeletal]

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14 hpf
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By 340 hpf, developing elements of the pharyngeal skeleton have grown dramatically, compared to 247 hpf. Elements shown here include Meckel’s (Mk), palatoquadrate (pq), basihyal (bh), ceratohyal (ch), interhyal (ih), and hyosymplectic (hs) cartilages, and premaxilla (pm), maxilla (mx), dentary (d), anguloarticular (aa), retroarticular (ra), quadrate (q), ventral hypohyal (hhv), ceratohyal bone (chb), branchiostegal rays 1-3 (bsr1, 2, 3), symplectic (sy), hyomandibula (hm), preopercle (pop), interopercle (iop), subopercle (sop), opercle (op), urohyal (uh), and ceratobranchial 5 (cb5) bones. Also visible are the scleral (sc) cartilage of the eye and the cleithrum (cl) bone of the pectoral fin skeleton.