Two new early Sarmatian s. str. (latest middle Miocene) rodent faunas from the Carpathian Basin
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ORIGINAL PAPER
Two new early Sarmatian s. str. (latest middle Miocene) rodent faunas from the Carpathian Basin János Hír 1
&
Vlad Codrea 2 & Jérôme Prieto 3
Received: 19 January 2019 / Revised: 24 April 2019 / Accepted: 15 August 2019 # Senckenberg Gesellschaft für Naturforschung and Springer-Verlag GmbH Germany, part of Springer Nature 2019
Abstract The new early Sarmatian microvertebrate localities Kozárd (Hungary, Nógrád County) and Vârciorog (Romania, Bihor County) are of first importance for the understanding of faunal evolution, as well as the palaeoenvironment and palaeoclimate changes during the late middle Miocene in the Central Paratethys. Both localities are rich in Foraminifera and Mollusca. This allows to correlate both continental faunas to the Elphidium reginum foraminifera zone and the Mohrensternia mollusc zone (early Sarmatian s. str.; Serrevalian). Furthermore, Kozárd is the type section of the lithostratigraphical unit Kozárd Formation. The Cricetodontini are the dominant elements in both rodent faunas which also include, beside smaller cricetid rodents, glirids and sciurids. The large hamster species from Vârciorog is described as new species “Cricetodon” venczeli n. sp. The species from Kozárd is a more evolved form, which is very similar to “C.” klariankae from Felsőtárkány-Felnémet 2/3, and thus assigned herein “C.” cf. klariankae. We that these three taxa as belonging to an evolutionary lineage, which underlines their biostratigraphic importance. Keywords Central Paratethys . Miocene . Sarmatian s. str. . Rodents . Cricetodontini
Abbreviations D4 P4 M1–M2–M3 d4 p4 m1–m2–m3 fr L
W Deciduous (milk) upper premolar Upper permanent premolar Upper permanent molars Deciduous (milk) lower premolar Lower permanent premolar Lower permanent molars Fragment Maximal antero-posterior length on the occlual surface of a tooth
* János Hír [email protected]
Hyps
No. inv MMP MTCO UBB FF 2/3 FF 2/7
Maximal linguo-labial width on the occlusal surface of a tooth Hypsodonty of the Cricetodon molars, measured after Van de Weerd (van de Weerd 1976, fig. 20) (it is a natural parameter and not an index) Inventory number Municipal Museum of Pásztó, Hungary Muzeul Ţarii Crişurilor, Oradea, Romania University Babeş-Bolyai, Cluj-Napoca, Romania Locality Felsőtárkány-Felnémet 2/3 Locality Felsőtárkány-Felnémet 2/7
Vlad Codrea [email protected] Jérôme Prieto [email protected] 1
Pásztói Múzeum, Múzeum tér 5, Pásztó 3060, Hungary
2
Babeş-Bolyai University, 1 Kogălniceanu Str., 400084 Cluj-Napoca, Romania
3
Department of Earth and Environmental Science, Palaeontology, Ludwig-Maximilians-University Munich, Richard-Wagner-Str. 10, 80333 Munich, Germany
Introduction During the last two decades, significant progress has been made in the knowledge of Badenian and Sarmatian s. str. terrestrial microvertebrate faunas in the Central Paratethys (e.g. Hír et al. 2016, 2017). Abundant assemblages in Northern Hungary (Litke 1-2, Hasznos, Szentendre, Sámsonháza, Mátraszőlős 1-2-3, Felsőtárkány-Felnémet 2/
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