Ardeosaurus digitatellus, (GRIER, 1914)

Simões, Tiago R., Caldwell, Michael W., Nydam, Randall L. & Jiménez-Huidobro, Paulina, 2017, Osteology, phylogeny, and functional morphology of two Jurassic lizard species and the early evolution of scansoriality in geckoes, Zoological Journal of the Linnean Society 180 (1), pp. 216-241 : 227

ARDEOSAURUS DIGITATELLUS ( GRIER, 1914)

Homeosaurus digitatellus Grier, 1914: p. 86 , plate XXII

Eichstaettisaurus digitatellus Cocude-Michel, 1963: p. 150 , plate XXX, A

Ardeosaurus digitatellus Hoffstetter, 1964: p. 284 ; plates 4 (fig. 2) and 5 (fig. 3)

Holotype: CM 4026 ( Fig. 6 ), partial skeleton including skull and parts of the postcranium preserved in dorsal view.

Locality and horizon: Solnhofen Limestone, Tithonian, Late Jurassic; Wintershof wei Eichstaett, Germany.

Revised diagnosis: Ardeosaurus digitatellus can be distinguished from A. brevipes by the absence of skull roof ornamentation and cephalic osteoderms; narrow parietal posterior margin between supratemporal processes; parietal posteromedial process absent; postorbital and postfrontal fused into a postorbitofrontal; 27 presacral vertebrae; pedal phalangeal formula?-3-4-5-4.

Figures

Figure 6. Holotype of Ardeosaurus digitatellus, skull details. A, parietal; B, right temporal region. F, frontal; J, jugal; J.imp., impression of jugal bone; P, parietal; P-F, frontoparietal suture; P.VI.M., parietal ventrolateral margin; PoF, postorbitofrontal; PoF.P.Pr., postorbitofrontal parietal process; Sq, squamosal; St.Pr., supratemporal process. Black arrow indicates point of breakage of the postorbitofrontal. Scale bars = 1 mm.