| Pannoniasaurus Temporal range: Late Cretaceous,
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|---|---|
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| Known remains and skeletal restorations | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Clade: | †Mosasauria |
| Family: | †Mosasauridae |
| Clade: | †Russellosaurina |
| Subfamily: | †Tethysaurinae |
| Genus: | †Pannoniasaurus Makádi, Caldwell & Ősi, 2012 |
| Type species | |
| †Pannoniasaurus inexpectatus Makádi, Caldwell & Ősi, 2012
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Pannoniasaurus is an extinct genus of tethysaurine mosasauroid known from the Late Cretaceous Csehbánya Formation and Ajka Coal Formation[1] (Santonian stage) of Hungary. It contains a single species, Pannoniasaurus inexpectatus,[2] dubbed "unexpected" because it was discovered in freshwater sediments, unlike other mosasaurs, which were marine predators. It was a medium-sized mosasaur, reaching up to 6 metres (20 ft) in length.
- ^ Ősi, Attila; Bodor, Emese Réka; Makádi, László; Rabi, Márton (2016). "Vertebrate remains from the Upper Cretaceous (Santonian) Ajka Coal Formation, western Hungary" (PDF). Cretaceous Research. 57: 228–238. doi:10.1016/j.cretres.2015.04.014. ISSN 0195-6671.
- ^ Makádi, L. S.; Caldwell, M. W.; Ősi, A. (2012). Butler, Richard J (ed.). "The First Freshwater Mosasauroid (Upper Cretaceous, Hungary) and a New Clade of Basal Mosasauroids". PLOS ONE. 7 (12): e51781. Bibcode:2012PLoSO...751781M. doi:10.1371/journal.pone.0051781. PMC 3526648. PMID 23284766.
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