Measurements (in mm) of skeletal elements in MFSN 1891 and in <i>Langobardisaurus</i> specimens.

<p>Measurements based on Renesto [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0141275#pone.0141275.ref047" target="_blank">47</a>] and Saller et al. [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0141275#pone.0141275.ref074" target="_blank">74</a>] and direct observation of the specimens. The vertebral lengths based on centrum length only (according to S. Renesto pers. comm. in <i>Langobardisaurus</i>) are reported in bold type. Abbreviations: M, mean.</p><p>Measurements (in mm) of skeletal elements in MFSN 1891 and in <i>Langobardisaurus</i> specimens.</p

The other purported dorsal vertebrae (indicated as f2-f5 in Fig 2A).

<p>f2 (A); f3 (B); f4 (C); f5 (D). Abbreviations are explained in the text. The scale bar equals 1 mm.</p

Other purported limb elements.

<p>The purported wing metacarpal (m in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0141275#pone.0141275.g002" target="_blank">Fig 2A</a>) (A); the purported wing phalanx 2 (o in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0141275#pone.0141275.g002" target="_blank">Fig 2A</a> and here), and the diaphysis fragment of another long bone (x in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0141275#pone.0141275.g002" target="_blank">Fig 2A</a> and here) (B); the purported wing phalanx 3 (p in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0141275#pone.0141275.g002" target="_blank">Fig 2A</a>) (C); the purported wing phalanx 4 (q in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0141275#pone.0141275.g002" target="_blank">Fig 2A</a>) (D). Abbreviations other than o and x are explained in the text. The scale bar equals 1 mm.</p

Limb bones of the protorosaurian <i>Langobardisaurus pandolfii</i> (MFSN 1921).

<p>The right femur (A); particular of the distal articular condyle of the right femur (B); the right humerus (C); the distal condyles of the right humerus (D); right tibia and fibula (E); left tibia and fibula (F); particular of the proximal portion of the left tibia (G); right radius and ulna (H). Abbreviations are explained in the text. The scale bar equals 5 mm.</p

The purported wing phalanx 1 (n in Fig 2A).

<p>The whole element according to the interpretation of Dalla Vecchia et al. [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0141275#pone.0141275.ref001" target="_blank">1</a>] (A); particular of the broken distal extremity (B). Abbreviations are explained in the text. The scale bar equals 5 mm.</p

The purported cervical vertebrae (d and c in Fig 2A).

<p>The photograph (A); the interpretative drawing (B); the 3D rendering of the microCT dataset of c in the exposed (C1) and hidden (C2) views; the 3D rendering of the microCT dataset of d in the exposed (D1) and hidden (D2) views. In (B), the elements c and d are marked with the gray colour. Abbreviations are explained in the text. The scale bar equals 5 mm (B) and 1 mm (C-D).</p

The purported radius-ulna pairs (l1-k1 and l2-k2 in Fig 2A).

<p>The pair l1-k1 (A); particular of the distal condyle of k1 (B); the distal portions of l1 and k1 and other elongate bone fragments parallel to them (C); the pair l2-k2 (D); the broken exposed extremities of l2 and k2, and the dorsal rib (g in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0141275#pone.0141275.g002" target="_blank">Fig 2A</a>) (E). Abbreviations are explained in the text. The scale bar equals 2 mm.</p

A purported caudal vertebra (h1 in Fig 2A).

<p>Photograph of the specimen (A); interpretative drawing (B); the 3D rendering of the microCT dataset in left lateral (hidden surface) (C), cranial (D), and caudal (E) views; 7th cervical vertebra of <i>Langobardisaurus pandolfii</i> in right lateral view and relative cervical rib (F). (F) is from Renesto [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0141275#pone.0141275.ref046" target="_blank">46</a>]. Abbreviations are explained in the text. The scale bar equals 2 mm.</p

The hemapophysis (i in Fig 2A).

<p>Photograph of the specimen. Abbreviations are explained in the text. The scale bar equals 1 mm.</p

The purported femur (r in Fig 2A).

<p>Photograph of the bone (A); interpretative drawing (B); particular of its proximal part (C); interpretative drawing of its proximal part (D). Abbreviations are explained in the text. The scale bar (A) equals 2 mm.</p