Szabó János szerk.: Fragmenta Mineralogica Et Palaentologica 20. 2002. (Budapest, 2002)

MESZOELY, CH. A. M. & GASPARIK M. The agamid remain Description — The Tokod fossil agamid material consists only of a single left dentary fragment (Figure 1). It measures 3.25 mm length and it appears to represent the middle portion of this bone. It bears five acrodont teeth. The teeth are triangular lacking any additional basal cusps present in a number of recent agamid species. The tip of the crown of the middle tooth is broken and the most anterior tooth is tilted slightly posteriad. The splenial groove is well developed and located on the lingual surface of the dentary. It is bordered above by a prominent lingual shelf. The labial surface of the dentary is smooth lacking any ornamentation or mental foramina. Discussion — The acrodont teeth clearly identifies the Tokod fossil jaw as a member of the family Agamidae. Acrodont teeth are unsocketed teeth born on the rim of the dentary. Only agamids and chamaeleonids have acrodont dentition among lizards. There are about 325 extant agamid species (COGGER & ZWEIFEL 1992). The family has a wide distribution in the Old World, Australia and the IndoAustralian Archipelago, but they do not occur in Central Europe or in present day Hungary. The closest agamid to Hungary is Laitdakia stellio from the Balkans. Figure 1 COGGER, H. G. & ZWEIFEL, R. G (1992): Reptiles and Amphibians. — Smithmark Publishers inc. 240 pp. GASPARIK, M. (1993): Late Pleistocene gastropod and vertebrate fauna from Tokod (NE Transdanubia, Hungary). — Fragmenta Mineralogica et Palaeontologia, 16: 89-116. HELLER, F. (I960): Wiirmeiszeitliche und letztinterglaziale Faunenreste von Lobsing bei Neustadt/Donau. — Frlanger Geologische Abhandlungen, 34: 19-33. JÁNOSSY, D. (1971): Der erste Nachweis einer Kalt-Mousterien Vertebratenfauna in Ungarn (Tokod-Nagyberek, Kom. KomáAuthors' addresses: Dr. Ch. A. M. MESZOELY Professor Department of Biology 414 Mugar Life Science Building Northeastern University Boston, Massachusetts 02115 USA The Tokod fossil is very fragmentary and represents only a very small portion of the complete dentary and consequently does not allow for exact specific assignment. It is much smaller than the adult L. stellio dentaries examined. While there is no absolute agreement in morphology between the dentaries of the Tokod fossil and L. stellio, the former is much smaller. But there are also similarities and the Hungarian fossil may represent a juvenile form of a species related to L. stellio. Agamids at the present are found only in the warmer regions of Europe and Asia and one may speculate that the presence of this fossil agamid in Hungary may indicate a warmer climate for Hungary during the Eem (Riss-Würm) interglacial than at the present for that region. The only unique component of the Tokod fossil herpetofauna is the agamid lizard. The rest of the fossÜ bones represent genera of frogs, toads, lizards and snakes still present in Hungary. The exact systematic assignment and relative abundance of these other amphibians and reptiles will be reported on in another publication. 1 nun Left: lingual view, right: labial view. rom). — Vertebrata Hungarica, 12: 103-110. JÁNOSSY, D. (1986): Pleistocene vertebrate faunas of Hungary. — Akadémiai Kiadó, Budapest, 208 pp. KORDOS, L. & RINGER, Á. (1991): A magyarországi felső-pleisztocén Arvicolidae-sztratigráfiájának klimato- és archeosztratigráfiai korrelációja, [Climatostratigraphic and archeostratigraphic correlation of Arvicolidae stratigraphy of the Late Pleistocene in Hungary]. — Annual Report of the Hungarian Geological Institute of

1989: 523534 [in Hungarian with English abstract]. M. GASPARIK Geological and Palaeontological Department Hungarian Natural History Museum Budapest, Múzeum krt. 14-16 Mail: 1431 Budapest, pf. 137 Hungary E-mail: gasparik@paleo.nhmus.hu — The agamid mandible fragment from Tokod (Hungarian Natural History Museum, V.98.5). — References