نتایج جستجو برای: santonian

تعداد نتایج: 194  

2018
Jun A. Ebersole Dana J. Ehret

Decades of collecting from exposures of the Upper Cretaceous Tombigbee Sand Member of the Eutaw Formation and Mooreville Chalk in Alabama, USA has produced large numbers of isolated Cretalamna (sensu stricto) teeth. Many of these teeth had formerly been assigned to the extinct Late Cretaceous shark Cretalamna appendiculata (Agassiz, 1843), a taxon that is now considered largely restricted to th...

Journal: :Austrian Journal of Earth Sciences 2022

Abstract The 2200 m thick Cretaceous units of well Gänserndorf UeT3 have been biostratigraphically analyzed based on cuttings from 3210 to 5140 m. deposits the Tirolic Glinzendorf Syncline (a part buried Northern Calcareous Alps) can be largely correlated with Lower Gosau Subgroup Grünbach Syncline. An exception is basal unit, which has no equivalent in This lower unit subdivided into a non-mar...

Journal: :Papers in palaeontology 2021

Modern hydrothermal vent communities are based on chemosynthesis by microbial primary producers. Molecular phylogenetic divergence estimates indicate that many of the dominant taxa arose during Cenozoic and Cretaceous; however, fossil record from these time periods is poor. One occurrence such Cretaceous pertains to six volcanogenic massive sulphide deposits in Troodos ophiolite Cyprus. These r...

Journal: :PeerJ 2016
Albert Prieto-Márquez Gregory M Erickson Jun A Ebersole

The cranial and postcranial anatomy of the basal hadrosaurid dinosaur Eotrachodon orientalis, from the uppermost Santonian of southern Appalachia (southeastern U.S.A.), is described in detail. This animal is the only known pre-Campanian non-lambeosaurine hadrosaurid, and the most complete hadrosauroid known from Appalachia. E. orientalis possesses a mosaic of plesiomorphic and derived character...

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