Anura Rafinesque 1815
Creators: name: Venczel, Márton
name: Csiki, andZOLTÁN
Publisher: name: Zenodo
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Collembola
Anura

description: Anura indet.   Material.— FGGUB v.435 (Fig. 5A), v. 436, v.437, v. 460, partial maxillae; FGGUB v. 453 (Fig. 6A), v. 454 (Fig. 6B) partial atlases; FGGUB v. 438 (Fig. 1C), v. 456–459, partial sacral vertebrae; FGGUB v. 440 (Fig. 6D), v. 441 (Fig. 6C), partial urostyles; FGGUB v. 445 (Fig. 6G), v. 406–408, partial humeri.   
 Description.—A partial left maxilla, FGGUB v. 435 (Fig. 5A), preserves a low postorbital facial part, its orbital margin being nearly parallel with the horizontal lamina. The latter has a convex lingual margin, ended posteriorly in a small pterygoidprocess. The tooth row extends posterior to the ptery − goidal process. The labial surface is smooth.   
 Atlas (Fig. 6A , B).—Only fragmentary centra were recovered. The centrum is dorsoventrally flattened. The anterior cotyles are ovaloidin shape, andare separatedmedially by an inter − cotylar region with a small notochordal pit. There is no medial notch in ventral or dorsal outline. In ventral view, FGGUB v. 454 has a distinct ventral crest (Fig. 6B 2), while FGGUB v. 453 (Fig. 6A 2) has a low and wide ridge only. The posterior margin is damaged in all available specimens.   
 Sacral vertebra (Fig. 1C).—Only the centrum is preserved. There is a single anterior condyle and two posterior ones. Thus, the sacrococcygeal articulation is bicondylar.   
 Urostyle (Fig. 6C, D).—The two condyloid fossae are well separatedfrom each other. FGGUB v. 440 (Fig. 6D) has a small median tubercle. The neural canal is relatively large, while the neural crest is low. The transverse process is directed posterolaterally in FGGUB v. 441 (Fig. 6C), but hookedposteriorly in that of FGGUB v. 440 (Fig. 6D 1).   
 Humerus (Fig. 6G).—In FGGUB v. 445 (Fig. 6G 1), the humeral ball is shiftedslightly laterally andthe medial crest is more or less similarly developed by comparison with the lateral crest. In consequence the olecranon scar has a medial position. In contrary, in FGGUB V.406 (Grigorescu et al. 1999: Fig. 3: 5, 6) the medial crest is better developed than the lateral one, andthe olecranon scar is displacedlaterally. However, the latter condition may be related to sexual dimorphism. There is a well−developed ventral cubital fossa.   
 Remarks.—The morphology of the maxilla somewhat resembles that of Kizylkuma, known from the Upper Cretaceous of Uzbekistan (Roček andNessov 1993), providedwith a low postorbital section. However, specimen LU−N 6/271 (see Roček andNessov 1993: text−fig. 9J, K), versus FGGUB v. 435, has a lingually prominent posterior section of horizontal lamina. The notochordal pit, seen in the atlas of specimens FGGUB v. 453 andv. 454 is also present in Eodiscoglossus (Evans et al. 1990; Estes andSanchíz 1982), and Leiopelma (Worthy 1987). A ventral crest in atlas is also present in Discoglossus and Latonia, but it is unknown in Paradiscoglossus and Wealdenbatrachus. It is noticeable that a similar atlas with the interglenoidal tubercle broken, described from the Belgian Paleocene as belonging to a salamander by Groessens−Van Dyke (1981), bears a conspicuous ventral ridge, too (Estes andSanchíz 1982). The size, morphology andthe orien − tation of transverse process in the available urostyles suggest that these may have belongedto two different forms. The mor − phology of the humerus suggests that the available specimens may represent indeterminate discoglossid frogs.
description: Published as part of Venczel, Márton & Csiki, andZOLTÁN, 2003, New frogs from the latest Cretaceous of Hateg Basin, Romania., pp. 609-616 in Acta Palaeontologica Polonica 48 (4) on pages 614-615, DOI: 10.5281/zenodo.13394058