pal a to pterygoid (palatopterigoid)

[ Pal a to quadrate Arch and Suspensorium of Lower Jaw of the Pike (Esox luciuns), seen from the inner side. a, cartilage interposed between HM, the hyomandibular bone, and Sy, the symplectic; 6, cartilage serving as a pedicle to the articulates; d, head of hyomandibular, articulating with skull; Ecpt. ectopterygoid; Ept, entopterygoid; Mpt, meta pterygoid; Qu, quadrate; Hy, hyoid; Pl, palatine; Art, articular bone; Mck, Meckel's cartilage. palatine bar. See palatum, palatal, and the quotation; also cuts under Marsipobranch i i and Petromyzon. The palato - quadrate arch [of an o eous fish] is represented by several bones, of which the most constant are the palatine in front and the quadrate behind and below. Besides these, there may be three others: an external, ectopterygoid, an internal, entopterygoid, and a meta pterygoid. Huxley , Anat. Vert., p. 135. Pal a to quadrate cartilage, in ichth . See cut under Spatular i a . II. n. In selachians, a cartilage or bone combining or representing both the palatal and the quadrate (as well as certain others which are differentiated in true fishes), and intervening between the cranium and the lower jaw, forming the suspensorium of the latter. It is developed in all the plagiostomous fishes, or sharks and rays. The pal a to quadrate is articulated with the base of the skull. Gegenbaur, Comp. Anat. (trans.), p. 448. palatorrhaphy (pal-a-tora-fi), n. [