families (summarized in the paper of Csiki-Sava et al. 2015 ), but in most cases, these fossils are isolated elements.
The ichthyofauna of the Late Cretaceous (Santonian) Iharkút vertebrate locality (Csehbánya Formation, western Hungary) was
The exceptional Santonian beds of the Upper Cretaceous Csehbánya Formation at the Iharkút vertebrate locality (Bakony Mountains, northwestern Hungary) have yielded a rich and diverse assemblage of vertebrate and
encountered Upper Cretaceous (Santonian) Iharkút terrestrial vertebrate
locality has yielded several vertebrate taxa since its discovery. Scincomorphan
lizards are also represented in this fauna by several jaw fragments. The most
abundant of these is represented by seven dentary fragments and an
indeterminate jaw fragment with characteristic teeth. The hypertrophied
splenial, the heterodont dentition, the cementum deposition at the bases of the
teeth, and the large subcircular resorption pits assign this type to the family
Teiidae. The dentition is composed of conical, monocuspid teeth in the mesial
region and transversely widened bicuspid teeth in the distal region. This
morphology is well known in members of the subfamily Polyglyphanodontinae.
Based on their dental morphology the Iharkút finds can be easily assigned to
the genus Bicuspidon. This genus is known from two species, B. numerosus Nydam
et Cifelli 2002 from the Albian-Cenomanian of Utah (North America) and B.
hatzegiensis Folie et Codrea 2005 from the Maastrichtian of the Hat¸eg Basin
(Transylvania, eastern Europe). The Hungarian specimens differ from Bicuspidon
numerosus in that the latter has bicuspid teeth in the distal part of the tooth
row, in contrast to the Hungarian species, which has two monocuspid teeth in
the distal region, one equal to the size of the preceding teeth, and one less
than half the size of the former one. The presence of monocuspid teeth at the
end of the tooth row resembles B. hatzegiensis, but since the very end of the
tooth row of the latter is not known it is not possible to determine if B.
hatzegiensis also has two monocuspid teeth distally. Thus it is not impossible
that the Hungarian specimens represent a new species, but at present the lack
of necessary information allows its determination only as Bicuspidon aff.
és felhalmozódási körülményei (Sedimentological features and the conditions of accumulation of the Iharkút bauxite deposit). - Földtani Közlöny, 114, pp. 19-48.
Az iharkúti bauxit üledékföldtani jellegei és felhalmozódási