Archive image from page 133 of A descriptive catalogue of the. A descriptive catalogue of the marine reptiles of the Oxford clay. Based on the Leeds Collection in the British Museum (Natural History), London .. descriptivecatal01brit Year: 1910 104 MAEINE EEPTILES OF THE OXFOED CLAY. any flexure in the caudal region such as is seen in Ophthalmosaurus. The chevrons (text-fig. 59) are paired compressed rods of bone which do not unite with one another ventrally; they are usually slightly curved, at least in the anterior part of the tail, where they unite with single facets on or near the hinder


Archive image from page 133 of A descriptive catalogue of the. A descriptive catalogue of the marine reptiles of the Oxford clay. Based on the Leeds Collection in the British Museum (Natural History), London .. descriptivecatal01brit Year: 1910 104 MAEINE EEPTILES OF THE OXFOED CLAY. any flexure in the caudal region such as is seen in Ophthalmosaurus. The chevrons (text-fig. 59) are paired compressed rods of bone which do not unite with one another ventrally; they are usually slightly curved, at least in the anterior part of the tail, where they unite with single facets on or near the hinder border of the Caudal vertebra and cbevrons of Mureenosaiirus leedsi: A, posterior caudal from back ; B, same specimen, from right side ; C, middle caudal vertebra from back ; D. same specimen from right side ; E, anterior caudal from back ; F, G, H, three chevron-bones from side. (E. 2864, | nat. size.) c, chevron-bones; , facets for chevron-bones ; , caudal ribs ; /., facets of chevron- bones for articulation Avith caudal centra ; , neural spine. centra (c, text-fig. 59, E). Further back they articulate by two facets () between the centra of successive vertebrae; the two facets make an obtuse angle with each other.


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