(teleostomi)
71endolymphatic sinus — a chamber at the outer end of the endolymphatic duct in Teleostomi …
72extrascapula — (plural extrascapulae)) small bones bordering the posterior margin of the skull roof in primitive Teleostomi. They apparently originate from enlarged scales. One of a series of from 2 8 bones known variously as cervicals, extrascapulars, nuchalia …
73fulcrum — (plural fulcra)) one of a variable number of specialized, often diamond shaped, scales in front of the anterior dorsal, anal and caudal fins in lower Teleostomi, e.g. in Acipenseridae, Lepisosteidae, Amiidae and Notacanthidae …
74gill septum — the layer of tissue lying between the two hemibranchs. In Elasmobranchii the septum extends out to the outer surface of the body and divides the gill slits. In the Teleostomi the septum is shorter than the gills …
75heterocercal — the type of tail fin in which the vertebral column turns upwards into the upper lobe which is longer than the lower. Asymmetrical externally as well as internally, e.g. Elasmobranchii, Acipenseridae, Polyodontidae and in many larval Teleostomi.… …
76intermaxillary — premaxilla (one of the paired, superficial, usually toothed, dermal bones of the upper jaw, proximal or anterior to the maxillaries; in primitive Teleostomi they comprise the middle, in more advanced forms they may comprise the whole, of the oral …
77interrenal gland — a yellowish endocrine gland producing corticosteroids, controlling water metabolism, stress and release of lymphocytes. Located between the kidneys (Elasmobranchii), or the heads of the kidney (Teleostomi) …
78labyrinthus membranaceus — (plural labyrinthi membranacei)) membranous labyrinth (the semicircular canals and the appended otosac. The canals and chambers are filled with endolymph and surrounded by perilymph. The membranous labyrinth is enclosed in cartilage in… …
79lepidomorium — (plural lepidomoria)) a scale or tooth comprising a thin walled cone of dentine covered by a layer of enamel and having a bony base. The pulp cavity has a single capillary loop and there is a basal canal and a posterior …
80lepidotrichium — (plural lepidotrichia)) a definitive fin ray (including spines), usually dermal bones found in Teleostomi. Each lepidotrich is formed of two hemitrichs closely joined along their length except basally where they diverge to articulate with the… …
