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AAAA

Online Encyclopedia
Originally appearing in Volume V23, Page 141 of the 1911 Encyclopedia Britannica.
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AAAA  . Scapular

See also:
arch
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external to ribs; one
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longitudinal
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post-orbital
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bar (Synaptosauria) . A supramastoid and paroccipital bones; ribs two-headed on centrum; carpals and tarsals not distinct in
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form from metapodials; vertebrae amphicoelous .
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Order 4, ICHTHYOPTERYGIA . A supramastoid; paroccipital not distinct; a postorbitosquamosal arch; ribs two-headed; a clavicle; obturator foramen small or none; vertebrae amphicoelous . Order 5, THEROMORA . No supramastoid; paroccipital not distinct.; a quadratougal arch; scapula triradiate; no clavicle; ribs oneeaded . Order 6, PLESIOSAURIA .

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ANDREW AAGESEN (1826-1879)

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