Paleopódium 51

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PALEOPÓDIUM 51. MEGHÍVÓ Az MTA–MTM–ELTE Paleontológiai Kutatócsoportja és az MTM Őslénytani és Földtani Tára félig formális, félig kötetlen, házi (de nyilvános) előadás-sorozatának ötvenegyedik előadására Ştefan VASILE: Continental microfossil remains from the Upper Cretaceous of Hungary and Romania – paleogeographic and paleoecological significance Ideje: 2013. március 7. (csütörtök), 15:00 Helye: az Őslénytár könyvtára (Ludovika tér 2.) The Upper Cretaceous continental deposits of Hungary and Romania are close to each other both spatially (neighboring landmasses within insular Europe) and temporally (Santonian age for the Csehbánya Formation and Maastrichtian age for the Haţeg and Rusca Montană Basins). Although there are important differences between the ecosystems found in the two areas, similarities also existed. Albanerpetontidae are an extinct family of tailed amphibians, including four genera known from the Middle Jurassic to the Pliocene, with occurrences in North America, Europe, Asia and Africa. Of these, only the genus Albanerpeton is known from the Upper Cretaceous of Romania and, most probably Hungary. Newly-discovered specimens from the Haţeg Basin might prove useful for a more precise taxonomical assessment of Romanian albanerpetontids, adding important information on the evolution and dispersal of the different species of Albanerpeton in Cretaceous Europe. A large number of small peculiar fossils have been recovered from both the Santonian of Hungary and the Maastrichtian of Romania. The morphology and chemical composition of these structures showed that they actually represent insect coprolites, produced by drywood termites. The discovery is of great importance in the attempt to reconstruct the Upper Cretaceous ecosystems, since fossil insect remains are much harder to find. Termites have an important role in the decomposition of vegetal matter, and were surely included in the diet of invertivore vertebrates. The Central-Eastern occurrence of termite coprolites also adds important information to the dispersion of these insects throughout Cretaceous Europe. Ştefan a Laboratory of Paleontology, Faculty of Geology and Geophysics, University of Bucharest munkatársa. Vendégünk a SYNTHESYS projekt keretében érkezett, házigazdája Gasparik Mihály. Az előadásra minden érdeklődőt szeretettel várunk! .

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A New Microvertebrate Assemblage from the Mussentuchit
A new microvertebrate assemblage from the Mussentuchit Member, Cedar Mountain Formation: insights into the paleobiodiversity and paleobiogeography of early Late Cretaceous ecosystems in western North America Haviv M. Avrahami1,2,3, Terry A. Gates1, Andrew B. Heckert3, Peter J. Makovicky4 and Lindsay E. Zanno1,2 1 Department of Biological Sciences, North Carolina State University, Raleigh, NC, USA 2 North Carolina Museum of Natural Sciences, Raleigh, NC, USA 3 Department of Geological and Environmental Sciences, Appalachian State University, Boone, NC, USA 4 Field Museum of Natural History, Chicago, IL, USA ABSTRACT The vertebrate fauna of the Late Cretaceous Mussentuchit Member of the Cedar Mountain Formation has been studied for nearly three decades, yet the fossil-rich unit continues to produce new information about life in western North America approximately 97 million years ago. Here we report on the composition of the Cliffs of Insanity (COI) microvertebrate locality, a newly sampled site containing perhaps one of the densest concentrations of microvertebrate fossils yet discovered in the Mussentuchit Member. The COI locality preserves osteichthyan, lissamphibian, testudinatan, mesoeucrocodylian, dinosaurian, metatherian, and trace fossil remains and is among the most taxonomically rich microvertebrate localities in the Mussentuchit Submitted 30 May 2018 fi fi Accepted 8 October 2018 Member. To better re ne taxonomic identi cations of isolated theropod dinosaur Published 16 November 2018 teeth, we used quantitative analyses of taxonomically comprehensive databases of Corresponding authors theropod tooth measurements, adding new data on theropod tooth morphodiversity in Haviv M. Avrahami, this poorly understood interval. We further provide the first descriptions of [email protected] tyrannosauroid premaxillary teeth and document the earliest North American record of Lindsay E.
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ADVERTIMENT. Lʼaccés als continguts dʼaquesta tesi doctoral i la seva utilització ha de respectar els drets de la persona autora. Pot ser utilitzada per a consulta o estudi personal, així com en activitats o materials dʼinvestigació i docència en els termes establerts a lʼart. 32 del Text Refós de la Llei de Propietat Intel·lectual (RDL 1/1996). Per altres utilitzacions es requereix lʼautorització prèvia i expressa de la persona autora. En qualsevol cas, en la utilització dels seus continguts caldrà indicar de forma clara el nom i cognoms de la persona autora i el títol de la tesi doctoral. No sʼautoritza la seva reproducció o altres formes dʼexplotació efectuades amb finalitats de lucre ni la seva comunicació pública des dʼun lloc aliè al servei TDX. Tampoc sʼautoritza la presentació del seu contingut en una finestra o marc aliè a TDX (framing). Aquesta reserva de drets afecta tant als continguts de la tesi com als seus resums i índexs. ADVERTENCIA. El acceso a los contenidos de esta tesis doctoral y su utilización debe respetar los derechos de la persona autora. Puede ser utilizada para consulta o estudio personal, así como en actividades o materiales de investigación y docencia en los términos establecidos en el art. 32 del Texto Refundido de la Ley de Propiedad Intelectual (RDL 1/1996). Para otros usos se requiere la autorización previa y expresa de la persona autora. En cualquier caso, en la utilización de sus contenidos se deberá indicar de forma clara el nombre y apellidos de la persona autora y el título de la tesis doctoral.
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