. Catalogue of the fossil birds in the British Museum (Natural History). 206 A. 30. Cast of a fragment of the right ramus of the mandible, showing the imperfect dental alveoli. A. 21. Cast of the axis vertebra. Original figured by Marsh in his 'Odontornithes,' pi. iii. fig. 1. A. 22. Cast of fourth cervical vertebra. Original figured by Marsh, up. cit. pi. iii. fig. 3. Vm. Hcsperornis rcgalis.—Anterior (A) aud postei-ior (B) aspects of tlie thirteenth cervical vertebra ; from the Cretaceous of Kansas. \. s, neural spine ; s, prezygapophysis; s, postzygaj)Opliysi8 ; d, upper tra
. Catalogue of the fossil birds in the British Museum (Natural History). 206 A. 30. Cast of a fragment of the right ramus of the mandible, showing the imperfect dental alveoli. A. 21. Cast of the axis vertebra. Original figured by Marsh in his 'Odontornithes,' pi. iii. fig. 1. A. 22. Cast of fourth cervical vertebra. Original figured by Marsh, up. cit. pi. iii. fig. 3. Vm. Hcsperornis rcgalis.—Anterior (A) aud postei-ior (B) aspects of tlie thirteenth cervical vertebra ; from the Cretaceous of Kansas. \. s, neural spine ; s, prezygapophysis; s, postzygaj)Opliysi8 ; d, upper transverse process (dia- popbysis); ;j, lower transverse process (parapophysis); , neural caual; f, costal canal. {After Marsh.) A. 23. Cast of the twelfth cervical vertebra. Original figured by Marsh, op. cit. pi. iv. fig. 3. A figure of the thirteenth cervical is given in woodcut (fig. 48). A. 24. Cast of the fifteenth cervical vertebra. Original figured by Marsh, oj). cit. pi. iv. fig. 6. A. 25. Cast of the first dorsal vertebra. Original figured by Marsh, op. cit. pi. iv. fig. 7, where it is reckoned as the sixteenth cervical. A. 27. Cast of the fifth dorsal vertebra. Original figured by Marsh, op. cit, pi. V. fig. 4, where it is reckoned as the third dorsal. A. 26. Cast of the eighth dorsal vertebra. Original figured by Marsh, op. cit. pi. V. fig. 7, as the sixth Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). Department of Geology. [Birds]; Lydekker, Richard, 1848-1915. London
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