. Bulletin. Natural history. RUSSELL: AMERICAN MOSASAURS 15. Text-fig. L Diagram of the functional units of a mosasaur skull. Abbreviations for this and all cranial figures are as follows. Kinetic units: Am, anterior mandibular unit; Ba, basal unit; Ep, epipteryg;oid unit; max. mesokinetic axis; mtj, metakinetic joint; mtx, metakinetic axis; Mu, muzzle unit; Oc, occipital segment; Pa, parietal unit; Pm, posterior mandibular unit; Qu, quadrate unit; St, stapes unit. Cranial structures: a, angular; ah, ampulla of horizontal and anterior vertical semicircular canals; ala, alar process of basisphe
. Bulletin. Natural history. RUSSELL: AMERICAN MOSASAURS 15. Text-fig. L Diagram of the functional units of a mosasaur skull. Abbreviations for this and all cranial figures are as follows. Kinetic units: Am, anterior mandibular unit; Ba, basal unit; Ep, epipteryg;oid unit; max. mesokinetic axis; mtj, metakinetic joint; mtx, metakinetic axis; Mu, muzzle unit; Oc, occipital segment; Pa, parietal unit; Pm, posterior mandibular unit; Qu, quadrate unit; St, stapes unit. Cranial structures: a, angular; ah, ampulla of horizontal and anterior vertical semicircular canals; ala, alar process of basisphenoid; ap, ampulla of posterior vertical semicircular canal; ar, articular; ba, basilar artery; bab, branch of basilar artery; bo, basioccipital; bs, basisphenoid: bt, basipterygoid process of basisphenoid; c, coronoid; ca, anterior vertical semicircular canal; ch, horizontal semicircular canal; che, cerebral hemisphere; cp, posterior vertical semicircular canal; ct, foramen for corda tympani; d, dentary; ds, dorsum sellae; e, epipterygoid; ec, ectopterygoid; en, external nans; end, endolymphatic duct; ens, endolymphatic sacculus; £, frontal or frontal suture; fo, fenestra ovalis; gl, intermandibular articulation; 1AM. internal auditory meatus; ic, internal carotid artery; icb, branch of internal carotid artery; in, internal naris; inc, incisura piriformis; ios, interorbital septum; j, jugal; jo, aperture for Jacobson's organ; 1, lacrymal; la, lagena; m, maxilla or maxillary suture; o, opisthotic; of, olfactory lobe; or, orbit; os, orbitosphenoid; ot, otosphenoidal crest of basisphenoid; p, parietal or suture for parietal; paf, parietal foramen; pi, palatatine; pld, perilymphatic duct; pis, perilymphatic sac- culus; pra, premaxilla; pof, postorbitofrontal or suture for postorbitofrontal; popr, paroccipital process of opisthotic; pr, prootic; pra, prcarticular; prf, prefrontal or suture for prefrontal; ps, parasphenoid; pt, pterygoid; q, quadrate; sa, surangular; set, sella turc
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Keywords: ., bookc, bookcentury1900, bookdecade1920, booksubjectnaturalhistory
