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Fig. 1 | BMC Evolutionary Biology

Fig. 1

From: A toothed turtle from the Late Jurassic of China and the global biogeographic history of turtles

Fig. 1

Skull of IVPP V18093, holotype, Sichuanchelys palatodentata n. sp., Late Jurassic (Oxfordian), Shishugou Formation, Wucaiwan, Xinjiang, China, in dorsal (a), ventral (b), left lateral (c), posterior (d), and oblique view focused on the basicranial region (e). Hatch marks indicate damaged areas. Abbreviations: ap = antrum postoticum; bo = basioccipital; bs = basisphenoid; ca = columella auris; ct = cavum tympani; ex = exoccipital; fm = foramen magnum; fng = foramen nervi glossopharyngei; fnh = foramen nervi hypoglossi; fpccc = foramen posterius canalis carotici cerebralis; fpccp = foramen posterius canalis carotici palatinum; fpp = foramen palatinum posterius; fr = frontal; fst = foramen stapedio-temporalis; ica = incisura columella auris; ju = jugal; mx = maxilla; op = opisthotic; pa = parietal; pal = palatine; pb = processus basipterygoideus; pbs = parabasisphenoid; pf = prefrontal; pi = processus interfenestralis; pm = premaxilla; po = postorbital; pro = prootic; ps = parasphenoid; pt = pterygoid; ptt = pterygoid teeth; qj = quadratojugal; qu = quadrate; so = supraoccipital; sq = squamosal; tb = tuberculum basioccipitale; vo = vomer

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