Results 171 to 180 of about 30,004 (307)

Caudal vertebrae of titanosaurian sauropod dinosaurs from the Lower Cretaceous Ilek Formation in Western Siberia, Russia

, 2020
© 2019 Elsevier Ltd Three sauropod middle caudal vertebrae are described from the three different localities within the Lower Cretaceous (Barremian-Aptian) Ilek Formation in Krasnoyarsk Territory, Western Siberia, Russia.
Averianov A., Ivantsov S., Skutschas P.
core  

A putatively extinct higher taxon of Spirotrichea (Ciliophora) from the Lower Cretaceous of Brazil. [PDF]

Sci Rep, 2021
da Silva Paiva T, de Souza Carvalho I.
europepmc   +1 more source

Neural Networks and Multivariate Analysis Based on Geochemical Data to Determine Stone Provenance From Ancient Calabrian Quarries (Southern Italy)

Archaeometry, EarlyView.
ABSTRACT This study shows an innovative approach to determine the origin of some Calabrian rocks quarried used in ancient times. Twenty‐five quarries, distributed in all the Calabrian provinces (Southern Italy), were studied and sampled. Ten samples were taken from each quarry, for a total of 250 samples.
Domenico Miriello, Stefano Columbu, Raffaella De Luca, Marco Lezzerini, Mirco Taranto, Fabrizio Antonelli   +5 more
wiley   +1 more source

A new vertebrate fauna from the Lower Cretaceous Holly Creek Formation of the Trinity Group, southwest Arkansas, USA. [PDF]

PeerJ, 2021
Suarez CA, Frederickson J, Cifelli RL, Pittman JG, Nydam RL, Hunt-Foster RK, Morgan K.   +6 more
europepmc   +1 more source

Refining the timing of Middle Pleistocene (MIS 12 to MIS 6) ice advances into northern central Europe: sedimentological analysis and single‐grain luminescence dating of glaciotectonic complexes and tunnel‐valley fills

Boreas, EarlyView.
We summarize the current state of knowledge on the age of the Middle Pleistocene ice advances into northern central Europe and provide 25 new single‐grain feldspar luminescence ages of Elsterian and Saalian glacigenic sediments to constrain the age of the ice advances and their tentative correlation with marine isotope stages/substages.
Niklas von Soest, Neda Rahimzadeh, Debra Colarossi, Falko Malis, Tobias Lauer, Wera Sander‐Beuermann, Yvonne Spychala, Christian Brandes, Runa Fälber, Sumiko Tsukamoto, Jutta Winsemann   +10 more
wiley   +1 more source

Submerged geomorphic record of Quaternary palaeoshorelines: terraces and clinothems along a shelf‐edge in the Žirje Archipelago, Adriatic Sea

Boreas, EarlyView.
Numerous studies have shown that during the Quaternary there were substantial fluctuations in sea level in response to glacial–interglacial climate variability, reaching lowstand positions up to 134 m below the present sea level (b.s.l.). These fluctuations have had a strong influence on the morphology of shallow shelf seas, which preserve evidence of ...
Ozren Hasan, Dea Brunović, Natalia Smrkulj, Maria Geraga, Dimitris Christodoulou, Nikolina Ilijanić, George Papatheodorou, Slobodan Miko   +7 more
wiley   +1 more source

A new pterosaur tracksite from the Lower Cretaceous of Wuerho, Junggar Basin, China: inferring the first putative pterosaur trackmaker. [PDF]

PeerJ, 2021
Li Y, Wang X, Jiang S.
europepmc   +1 more source

Unravelling the phylogeny of armadillos and their kin (Mammalia, Xenarthra, Cingulata) combining morphological, molecular, and stratigraphic data

Cladistics, EarlyView.
Abstract Cingulata, a major lineage of Xenarthra, comprises extinct and extant armoured placental mammals that diversified throughout the Cenozoic. Despite extensive study, phylogenetic hypotheses based on morphological and molecular data remain incongruent, and no total evidence analysis has been conducted. Here, we integrate the largest morphological
Daniel M. Casali, Mariela C. Castro, Martin R. Ciancio, Timothy J. Gaudin, Jeremy L. Bramblett, Alberto Boscaini, Fernando A. Perini, Max C. Langer   +7 more
wiley   +1 more source

A new sauropod tracksite from the Lower Cretaceous of Ningxia, Northwestern China, with implications for overtrack preservation. [PDF]

Sci Rep
Yang Q, Xing L, Lallensack JN, Liu L, Chen Q, Romilio A, Qi Q, Qi J, Zhao M, Chen X, Zhao Y, Wei L, Wan Y.   +12 more
europepmc   +1 more source

The first record of exceptionally-preserved spiral coprolites from the Tsagan-Tsab formation (lower cretaceous), Tatal, western Mongolia. [PDF]

Sci Rep, 2021
Rummy P, Halaclar K, Chen H.
europepmc   +1 more source