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QAAAA . Scapular See also:arch See also:external to ribs; two See also:longitudinal See also:post-orbital bars (paroccipital arch distinct) (Archosauria). a . A supramastoid See also:bone . Ribs two-headed ; a clavicle and interclavicle ; See also:acetabulum closed; no obturator foramen; See also:ambulatory; vertebrae amphicoelous . See also:Order 7, PELYCOSAURIA . aa . No supramastoid . 1 Proc . Amer . Assoc. for the See also:Advancement of See also:Science, loth See also:meeting (See also:Cambridge, 1871, 8vo), pp . 230 sq.; Amer . Naturalist (1889), vol. See also:xxiii. p . 863 . 2 See also:Syllabus of Lectures on the See also:Vertebrata (See also:Philadelphia, 1898, 8vo), P . 54.141 Ribs two-headed; interclavicle not distinct; external digits greatly elongated to support a patagium for See also:flight . Order 8, ORNITHOSAURIA . Ribs two-headed; no interclavicle; acetabulum open; ambulatory . Order 9, DINOSAURIA . Ribs two-headed; an interclavicle; acetabulum closed; ambulatory . Order 1o, LORICATA . Ribs one-headed; an interclavicle; acetabulum closed, a large obturator foramen; ambulatory . |
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