Szabó János szerk.: Fragmenta Mineralogica Et Palaentologica 19. 2001. (Budapest, 2001)

VRNCZEL, M. Systematics Class Amphibia LlNNEAUS, 1758 Order Anura RAFINESQUE, 1815 Family Discoglossidae GÜNTER, 1859 Genus Latonia MEYER, 1843 Latonia gigantea (LARTET, 1851) (Figure 1: A-D) Figure 1 — Latonia gigantea (A-D) and Bombina sp. (E, F) from Osztramos 1. — A: frontoparietal (Ol/b); B: scapula (Ol/e); C: humerus (Ol/e), D: ilium (Ol/e); E, F: ilium (Ol/e). — A: dorsal view; B, D, E: lateral views; C: ventral view; F: posterior view. Material — Osztramos 1/b: 1 frontoparietal, 1 urostyle, 1 ilium (HNHM. No. V.99.1); Osztramos 1/c: 1 prooticooccipital, 1 frontoparietal, 1 maxilla, 1 presacral vertebra, 1 scapula, 2 humeri, 1 ilium (HNHM. No. V.99.2); Osztramos 1/e: 4 prooticooccipitals, 1 sphenethmoid, 2 premaxillae, 12 maxillae, 3 frontoparietals, 3 prearticulars, 4 atlases, 20 presacral vertebrae, 2 sacral vertebrae, 4 urostyles, 3 clavicles, 1 coracoid, 6 scapulae, 8 humeri, 1 radioulna, 10 ilia, 2 femora, 2 tibiofibulae (HNHM. No. V. 74.129). Description and comments — The material belonged to specimens of various sizes. The dorsal surface of the frontoparietal is sculptured and the facies posterior lacks the foramen pro artéria occipitalis. The maxilla is toothed; in large individuals the outer surface of its posterior part is covered by a secondary sculpture. Two coronoid processes provide the prearticular, and a distinct depression is observed above the crista mandibulae externa (ROCEK 1994). The vertebrae are opistocoelous; the urostyle is elongated, bicotylar, with a narrow dorsal fissure, and usually with a pair of transverse processes. The scapula is relatively short, with well-developed pars acromialis. The external surface in a large specimen is covered also by a secondary sculpture. The distal portion of the humerus is bent laterally, having a distincdy larger epicondylus medialis than epicondylus lateralis; the caput humeri is shifted laterally. The tuber superius of the ilium is well developed, while the pars ascendens is distinctiy larger than the pars descendens. The fossula tuberis superioris, situated ventrally from the tuber superius, is usually well evidenced. According to HOSSINI (1993), ROCEK (1994) and SANCHÍZ (1998), in the evolution of the genus Latonia, two distinct lineage may be distinguished: the lineage of L» vertai%oni — L. ragei (without secondary sculpture on maxillae) and the lineage of L. gigantea, (with secondary sculpture on maxillae), both of them exhibit a marked trend toward gigantism (ROCEK 1994). Genus Bombina OKEN, 1816 Bombina sp. (Figure 1 : E, F) Material — Osztramos 1/c: 2 ilia (HNHM. No. V.99.3). Description and comments — The tuber superius of the ilium, situated above the anterior margin of the acetabulum, is ovaloid in shape, and slightly projected laterally. The preacetabular fossa is lacking. The pars descendens in a specimen, possessing a small tubercle when viewed medially. The above characters are variable in recent specimens of B. bombina and B. variegata (HODROVA 1981, 1985, 1987), thus closer assignment of the remains in hand are actually impossible.