Uruguaysuchus aznarezi, RUSCONI, 1933

Soto, Matías, Pol, Diego & Perea, Daniel, 2011, A new specimen of Uruguaysuchus aznarezi (Crocodyliformes: Notosuchia) from the middle Cretaceous of Uruguay and its phylogenetic relationships, Zoological Journal of the Linnean Society 163 (5), pp. 644-645 : 644-645

URUGUAYSUCHUS AZNAREZI RUSCONI, 1933

Synonymy: Uruguaysuchus terrai Rusconi, 1933 .

Diagnosis: Same as for genus, by monotypy.

Holotype: CA, unnumbered.

Referred material: FC-DPV 2320, partial skull ( Figs 2–8 ), mandible ( Figs 9–11 ), atlas intercentrum ( Fig. 13 ), and two cervical vertebrae and a cervical rib ( Fig. 14 ). Other materials referred to U. aznarezi not described herein, presumably from the same locality, include MPMAB 2881 (two post-caniniform teeth, one osteoderm and a partial humerus) and MUNHINA 451 (two fragmentary vertebrae).

Locality and horizon: Guichón, Paysandú province, Uruguay. Guichón Formation (middle Cretaceous; see above for discussion of possible age).

Figures

Figure 2. FC-DPV 2320. Skull. A, dorsal view. B, ventral view. C, right lateral view (inverted). Scale bar = 1 cm.

Figure 3. FC-DPV 2320, anterior end of rostrum in left lateral view. Scale bar = 2 cm.

Figure 4. FC-DPV 2320, detail of right jugal and lacrimal in lateral view. Scale bar = 2 cm.

Figure 5. FC-DPV 2320, detail of choanal region. Scale bar = 2 cm.

Figure 6. FC-DPV 2320. A, left pterygoid and ectopterygoid in laterodorsal view. B, detail of right ectopterygoid in ventral view. Scale bar = 2 cm.

Figure 7. FC-DPV 2320, otic region of right quadrate in lateral view. Scale bar = 2 cm.

Figure 8. FC-DPV 2320, right anterior palpebral in dorsal view. Scale bar = 2 cm.

Figure 9. FC-DPV 2320, mandible. A, dorsal view. B, ventral view. C, lateral view. Scale bar = 1 cm.

Figure 10. FC-DPV 2320, symphyseal region of lower jaw. A, left lateral view. B, posterodorsal view. Scale bar = 2 cm.

Figure 11. FC-DPV 2320, articular region of lower jaw. A, lateral view (inverted). B, dorsal view. C, medial view. Scale bar = 2 cm.

Figure 13. FC-DPV 2320, atlas intercentrum. A, dorsal view. B, ventral view. Scale bar = 1 cm.

Figure 14. FC-DPV 2320, anterior cervical vertebrae. A, left lateral view. B, ventral view. C, anterior view. D, anterior cervical rib in lateral view. Scale bar = 1 cm.