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Evidence for air sacs in fossil archosaurs. Letters next to each taxon... | Download Scientific Diagram
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![The Cambridge natural history. Zoology. 330 FISHES iric. o.c. a.or which the first and last supply the anterior walls of the first pair of sacs and the posterior walls of the The Cambridge natural history. Zoology. 330 FISHES iric. o.c. a.or which the first and last supply the anterior walls of the first pair of sacs and the posterior walls of the](https://c8.alamy.com/comp/RDMB9Y/the-cambridge-natural-history-zoology-330-fishes-iric-oc-aor-which-the-first-and-last-supply-the-anterior-walls-of-the-first-pair-of-sacs-and-the-posterior-walls-of-the-last-pair-respectively-each-of-the-remaining-afferent-vessels-extends-into-an-interbranchial-septum-and-supplies-the-gill-lamellae-of-the-posterior-wall-of-one-sac-and-those-of-the-anterior-wall-of-the-next-sac-behind-the-corresponding-efferent-branchial-vessels-have-a-similar-distribution-and-unite-dors-ally-to-form-a-median-dorsal-aorta-beneath-the-base-of-the-skull-the-latter-vessel-divides-into-two-branches-wh-RDMB9Y.jpg)