infraorbital 1 Infraorbital that is the first (anteriormost) bone of the infraorbital series. Suborbital and infraorbital 1 are synonymized by some authors (e.g., Cuvier), however, a suborbital bone in fishes has a different meaning than an infraorbital 1; it is a bone(s) that it is placed between the postero-dorsal infraorbitals and preopercle. A suborbital (also named postorbital by some authors) is not present in extant teleosts with the exception of Arapaima where it is occasionally present. Suborbital bones are found in some fossil basal teleosts. [G. Arratia] TAO:0000223 lachrymal (French) lachrymal bone lacrimal bone lacrymal (French) lacrymal bone suborbital teleost_anatomy infraorbital