Figure 8. BIBE 45854 in An articulated cervical series of Alamosaurus sanjuanensis Gilmore, 1922 (Dinosauria, Sauropoda) from Texas: new perspective on the relationships of North America's last giant sauropod

Figure 8. BIBE 45854, Alamosaurus sanjuanensis. Close-up views of autapomorphic lamina dividing the prezygapophyseal centrodiapophyseal fossa into dorsal and ventral sub-fossae. A, cervical vertebra 13, left lamina and fossae in anterolateral view. B, cervical vertebra 13, right lamina and fossae in anterolateral view. C, cervical vertebra 14, centrum and arch laminae and fossae in lateral view during preparation of specimen. D, line drawing of view in C. E, cervical vertebra 14, stereophotopairs of right prezygapophyseal centrodiapophyseal fossa and dividing lamina in anterolateral view. Solid grey fill indicates broken bone surface. Abbreviations: acdl, anterior centrodiapophyseal lamina; C, cervical vertebra; cdf, centrodiapophyseal fossa; clf, centrum lateral fossa; cpol, centropostzygapophyseal lamina; cprl, centroprezygapophyseal lamina; crib, cervical rib; dia, diapophysis; lam, lamina dividing the prezygapophyseal centrodiapophyseal fossa; pcdl, posterior centrodiapophyseal lamina; pocdf, postzygapophyseal centrodiapophyseal fossa; podl, postzygodiapophyseal lamina; pp, parapophysis; prcdf1, dorsal prezygapophyseal centrodiapophyseal fossa; prcdf2, ventral prezygapophyseal centrodiapophyseal fossa; prdl, prezygodiapophyseal lamina; prz, prezygapophysis. Scale bar in A shows 10 cm divisions; scale bars in B, C and E = 10 cm.