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Fig. 2 | BMC Ecology and Evolution

Fig. 2

From: Heads or tails first? Evolution of fetal orientation in ichthyosaurs, with a scrutiny of the prevailing hypothesis

Fig. 2

Overview and details of the trunk of female Mixosaurus sp. PIMUZ T 2262 and associated in situ fetal material: A, complete overview of the specimen (An and Po denote maternal anterior and posterior); B, detail of the articulated fetal vertebral column also visible in A; C, detail of the fetal proximal anterior limb also seen in A. Interpretations denoted by an apostrophe after their respective letter. Abbreviations: dp, dorsal process; hu, humerus; in, intermedium; ra, radius; re, radiale; rf, rib facet; ul, ulna

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