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. 2015 Oct 20;3:e1323. doi: 10.7717/peerj.1323

Figure 20. Stereographic comparisons of spinosaur cervical vertebrae from the Kem Kem compound assemblage.

Figure 20

(A) stereopair showing ventral view of BSPG 2011 I 117, Sigilmassasaurus brevicollis; (B) right lateral view of BSPG 2011 I 117; (C) right lateral view of BSPG 2013 I 97; (D) stereopair showing ventral view of BSPG 2013 I 97, Spinosauridae indet.; (E) stereopair showing ventral view of BSPG 2006 I 56, Sigilmassasaurus brevicollis. Note triangular plateau in Sigilmassasaurus and prominent step in lateral outline in mid-cervicals, and ventral lateral tubercula with central depression and weak lateral step in BSPG 2013 I 97. Scale bars equal 5 cm.