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

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 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

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

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 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 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

MFSN 1891, gastric pellet.

<p>Photo of the exposed surface (A), 3D rendering of the microCT virtual rendering of the other (hidden) surface (B). Abbreviations are explained in the text. The scale bar equals 10 mm.</p

Ratios between long bone lengths and cervical and dorsal vertebrae length in MFSN 1891.

<p>The ratios obtained from vertebral lengths based on centrum length only are reported in bold type.</p><p>Ratios between long bone lengths and cervical and dorsal vertebrae length in MFSN 1891.</p