Autor: Stevens, J. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: The Boquillas Formation of the Big Bend National Park, Texas, USA, a reference Cenomanian through Santonian (Upper Cretaceous) carbonate succession at the southern end of the Western Interior Seaway
Autorzy:: Cooper, D. A.
Cooper, R.W.
Stevens, J. B.
Stevens, M. S.
Cobban, W. A.
Walaszczyk, I.
Tematy:: Boquillas Formation
Upper Cretaceous
US Western Interior Seaway
lithostratigraphy
biostratigraphy
paleoenvironment
formacja Boquillas
górna kreda
litostratygrafia
biostratygrafia
paleośrodowisko; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/139039.pdf Link otwiera się w nowym oknie
Opis:: The upper lower Cenomanian through middle Santonian (Upper Cretaceous) of the Boquillas Formation in the Big Bend Region of Trans-Pecos Texas consists of a marine carbonate succession deposited at the southern end of the Western Interior Seaway. The Boquillas Formation, subdivided into the lower, c. 78 m thick limestone-shale Ernst Member, and the upper, c. 132 m thick limestone/chalk/marl San Vicente Member, was deposited in a shallow shelf open marine environment at the junction between the Western Interior Seaway and the western margins of the Tethys Basin. Biogeographically, the area was closely tied with the southern Western Interior Seaway. The richly fossiliferous upper Turonian, Coniacian and lower Santonian parts of the Boquillas Formation are particularly promising for multistratigraphic studies.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 2.

Tytuł:: A new mammal from the Turonian–Campanian (Upper Cretaceous) Galula Formation, southwestern Tanzania
Autorzy:: O’Connor, P.M.
Krause, D.W.
Stevens, N.J.
Groenke, J.R.
MacPhee, R.D.E.
Kalthoff, D.C.
Roberts, E.M.
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Powiązania:: https://bibliotekanauki.pl/articles/20223.pdf Link otwiera się w nowym oknie
Opis:: We here establish a new mammaliaform genus and species, Galulatherium jenkinsi (Mammalia), from the Upper Cretaceous Galula Formation in the Rukwa Rift Basin of southwestern Tanzania. This represents the first named taxon of a mammaliaform from the entire Late Cretaceous of continental Afro-Arabia, an interval of 34 million years. Preliminary study of the holotypic and only known specimen (a partial dentary) resulted in tentative assignation to the Gondwanatheria, a poorly known, enigmatic clade of Late Cretaceous–Paleogene Gondwanan mammals (Krause et al. 2003). The application of advanced imaging (μCT) and visualization techniques permits a more detailed understanding of key anatomical features of the new taxon. It reveals that the lower dentition consisted of a large, procumbent lower incisor and four cheek teeth, all of which were evergrowing (hypselodont). Importantly, all of the teeth appear devoid of enamel. Comparisons conducted with a range of Mesozoic and selected Cenozoic mammaliaform groups document a number of features (e.g., columnar, enamel-less and evergrowing teeth, with relatively simple occlusal morphology) expressed in Galulatherium that are reminiscent of several distantly related groups, making taxonomic assignment difficult at this time. Herein we retain the provisional referral of Galulatherium (RRBP 02067) to Gondwanatheria; it is most similar to sudamericids such as Lavanify and Bharratherium from the Late Cretaceous of Madagascar and India, respectively, in exhibiting relatively simple, high-crowned, columnar cheek teeth. Other features (e.g., enamel-less dentition) are shared with disparate forms such as the Late Jurassic Fruitafossor and toothed xenarthrans (e.g., sloths), here attributed to convergence. Revised analyses of the depositional context for the holotype place it as having lived sometime between the late Turonian and latest Campanian (roughly 91–72 million years ago). This enhanced geochronological context helps to refine the palaeobiogeographical significance of Galulatherium among Cretaceous mammals in general and those from Gondwanan landmasses specifically.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 3.

Tytuł:: A middle Eocene mesoeucrocodylian (Crocodyliformes) from the Kaninah Formation, Republic of Yemen
Autorzy:: Stevens, Nancy J.
Hill, Robert V.
Al-Wosabi, Mohammed
Schulp, Anne
As-Saruri, Mustafa
Al-Nimey, Fuad
Jolley, Lea Ann
Schulp-Stuip, Yvonne
O’Connor, Patrick
Tematy:: Mesoeucrocodylia
atoposaurid
crocodyliforms
Eocene
Kaninah Formation
Yemen
Eocen
formacja Kaninah
Jemen
krokodylomorfy; Pokaż więcej
Wydawca:: Uniwersytet im. Adama Mickiewicza w Poznaniu
Powiązania:: https://bibliotekanauki.pl/articles/94386.pdf Link otwiera się w nowym oknie
Opis:: During the Cenozoic, the Arabian Plate separated from continental Africa and assumed a closer geographical relationship with Eurasia. As such, the vertebrate fossil record of the Arabian Peninsula has great potential for documenting faunal interchanges that occurred as a result of such tectonic events, with a shift from a primarily Afro-Arabian fauna in the Palaeogene to a more cosmopolitan fauna in the Neogene. Understanding of the sequence and timing of this faunal interchange has long been hampered by a lack of palaeontological data. Recently recovered fossils from the Middle Eocene Kaninah Formation of Yemen constitute the earliest Palaeogene record of continental vertebrates from the Arabian Peninsula, thereby offering a rare glimpse at the region’s post--Cretaceous fauna. Here we describe fossil materials from the Kaninah Formation, a collection of dental and postcranial elements representing a mesoeucrocodylian crocodyliform of unclear affinities. The specimen exhibits ziphodont tooth morphology along with a biserial paravertebral shield and polygonal gastral osteoderms, consistent with certain mesoeucrocodylians (e.g., ziphodontan notosuchians). Yet the associated fragmentary anterior caudal vertebra, although badly abraded, preserves morphology suggestive of procoely. This vertebral type in combination with the dental and osteoderm morphology is much more taxonomically restrictive and consistent with the suite of characters exhibited by atoposaurids, a finding that would significantly extend that clade through the Cretaceous/Palaeogene boundary. Alternatively, given the relative paucity of information from the region during the Palaeogene, the combination of characteristics of the Kaninah crocodyliform may reflect a novel or poorly known form exhibiting previously unrecognised character mosaicism. We take a conservative approach, and refer the Kaninah specimen to Mesoeucrocodylia, Atoposauridae (?) pending discovery of more complete material. New fossils recovered from the Kaninah Formation raise unanticipated questions about the longevity of Mesozoic clades, underscoring the role that the region may play in revealing novel occurrences, relictual forms, and evidence of faunal dispersals from this critical interval in vertebrate evolutionary history.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 4.

Autorzy:: Pecar, C.
Bondì, M.
Hernández-Pinto, R. J.
Lin, M.
Chatagnon, P.
Suarez, L.
Sborlini, G.
Satogata, T.
Renteria-Estrada, D. F.
Dean, C.
Ent, R.
Ammendola, R.
Branson, N.
Montgomery, R.
Perdue, G. N.
Bernauer, J.
Menzo, T.
Paudel, C.
Singh, J.
Junaid, M.
Tran, N.
Cline, E. W.
Karande, P.
Richford, D.
Purschke, M. L.
Acosta, F. Torales
Giroux, J.
Whiteson, D.
Rajendran, H.
Matousek, G.
Blin, A. Hiller
Horn, T.
Peng, C.
Phelps, W.
Walter, E.
Dash, S.
Liuti, S.
Butter, A.
Williams, M.
Chahrour, I.
McSpadden, D.
Zachariou, N.
Fanelli, C.
Osborn, J. D.
Kalantarians, N.
Twagirayezu, F. J.
Volkova, S.
Trotta, R.
Battaglieri, M.
Mikuni, V.
Miceli, T.
Elayavalli, R. Kunnawalkam
Siódmok, Andrzej
Nachman, B.
Niestroy, J.
Saini, A.
Oregon, S. A. Ochoa
Oleniacz, J.
Cisbani, E.
Deconinck, W.
Sato, N.
Ren, Y.
Gao, Y.
Zurita, P.
Hegde, P. L.
Li, Y.
Britton, T.
McEneaney, M.
Huang, J.
Singh, R.
Stone, P.
Deshpande, A.
Wu, S.
Allaire, C.
Rajput, K.
Fol, E.
Tawfik, A.-N.
Tyson, R.
Aschenauer, E.-C.
Balandat, M.
Joo, B.
Kriesten, B.
Stevens, J.
Roy, B. J.
Roy, D.
Suresh, K.
Furletov, S.
Finger, M.
Jalotra, A.
Schram, M.
Jayakodige, D.
Shih, D.
Nair, R. R.
Vossen, A.
Diefenthaler, M.
Waduge, N. C. Gunawardhana
Hassan, O.
Liu, F.
Opis:: The Electron-Ion Collider (EIC), a state-of-the-art facility for studying the strong force, is expected to begin commissioning its first experiments in 2028. This is an opportune time for artificial intelligence (AI) to be included from the start at this facility and in all phases that lead up to the experiments. The second annual workshop organized by the AI4EIC working group, which recently took place, centered on exploring all current and prospective application areas of AI for the EIC. This workshop is not only beneficial for the EIC, but also provides valuable insights for the newly established ePIC collaboration at EIC. This paper summarizes the different activities and R&D projects covered across the sessions of the workshop and provides an overview of the goals, approaches and strategies regarding AI/ML in the EIC community, as well as cutting-edge techniques currently studied in other experiments.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Skocz do pozycji: 5.

Tytuł:: HESS and Fermi-LAT discovery of gamma-rays from the blazar 1ES 1312-423
Autorzy:: Laffon, H.
Schüssler, F.
Garrigoux, T.
Niemiec, J.
Naurois, M. de
Holler, M.
Fegan, S.
Krayzel, F.
Dyrda, M.
Fontaine, G.
Mayer, M.
Santangelo, A.
Perez, J.
Dyks, J.
Klochkov, D.
Lenain, J.-P.
Hague, J. D.
Aharonian, F.
Eldik, C. van
Tjus, J. Becker
Krakau, S.
Schwemmer, S.
Katz, U.
Willmann, P.
Drury, L. O’C.
Heinzelmann, G.
Lennarz, D.
Balzer, A.
Reyes, R. de los
Domainko, W.
Kieffer, M.
Ohm, S.
Henri, G.
Marcowith, A.
Lopatin, A.
Mohamed, M.
Sanchez, D. A.
Wierzcholska, Alicja
Oya, I.
Ojha, R.
Wörnlein, A.
Giebels, B.
Lohse, T.
Pelletier, G.
Brun, P.
Punch, M.
Harris, J.
Stevens, J.
Reimer, O.
Göring, D.
Spieß, F.
Chadwick, P. M.
Boisson, C.
Casanova, S.
Kolitzus, D.
Birsin, E.
Conrad, J.
Rulten, C. B.
Dalton, M.
Colafrancesco, S.
Dickinson, H. J.
Lefaucheur, J.
Katarzyński, K.
Wouters, D.
Cheesebrough, A.
Venter, C.
Jahn, C.
Kluźniak, W.
Edwards, P. G.
Bernlöhr, K.
Méhault, J.
Bulik, T.
Stegmann, C.
Brun, F.
Tluczykont, M.
Kaufmann, S.
Cerruti, M.
Marandon, V.
Vorster, M.
Opitz, B.
Perkins, J. S.
Daniel, M. K.
Hofverberg, P.
Hahn, J.
Hinton, J. A.
Stawarz, Łukasz
Janiak, M.
Eger, P.
Vincent, P.
Rudak, B.
Poon, H.
Tavernet, J.-P.
Arribas, M. Paz
Bolmont, J.
Reimer, A.
Fiasson, A.
McComb, T. J. L.
Wilhelmi, E. de Oña
Raue, M.
Trichard, C.
Schlickeiser, R.
Renaud, M.
Szostek, Anna
Menzler, U.
Hervet, O.
Moulin, E.
Kosack, K.
Rosier-Lees, S.
Wagner, S. J.
Schwarzburg, S.
Farnier, C.
Hillert, A.
Viana, A.
Maxted, N.
Fernandes, M. V.
Fernandez, D.
Häffner, S.
Grudzińska, M.
Degrange, B.
Kadler, M.
Vasileiadis, G.
Grondin, M.-H.
Naumann, C. L.
Jung, I.
Davids, I. D.
Ostrowski, Michał
Barnacka, Anna
Couturier, C.
Förster, A.
Balenderan, S.
Zacharias, M.
Djannati-Ataï, A.
Dubus, G.
Khélifi, B.
Zechlin, H.-S.
Hermann, G.
Jamrozy, Marek
Schwanke, U.
Weidinger, M.
Moderski, R.
Biteau, J.
Becherini, Y.
Jacholkowska, A.
Gast, H.
Dutson, K.
Quirrenbach, A.
Zajczyk, A.
deWilt, P.
Bordas, P.
Lu, C.-C.
Lamanna, G.
Maurin, G.
White, R.
Rowell, G.
Feinstein, F.
Rob, L.
Schulz, A.
Cologna, G.
Meyer, M.
Volpe, F.
Acero, F.
Lemoine-Goumard, M.
Medina, M. C.
Stinzing, F.
Edwards, T.
Kastendieck, M. A.
Horns, D.
Peyaud, B.
Espigat, P.
Carrigan, S.
Glicenstein, J. F.
Spengler, G.
Rieger, F.
Gallant, Y. A.
Akhperjanian, A. G.
Ward, M.
Krüger, P. P.
Terrier, R.
Brucker, J.
Abramowski, A.
Kneiske, T.
Parsons, R. D.
Hofmann, W.
Pühlhofer, G.
Chalme-Calvet, R.
Murach, T.
Bissaldi, E.
Angüner, E.
Egberts, K.
Sol, H.
Valerius, K.
Pekeur, N. W.
Stycz, K.
Sushch, I.
Chaves, R. C. G.
Nedbal, D.
Petrucci, P.-O.
Raab, S.
Panter, M.
Jankowsky, F.
Völk, H. J.
Gajdus, M.
Nolan, S. J.
Füßling, M.
Pita, S.
Sahakian, V.
Chrétien, M.
Oakes, L.
Zdziarski, A. A.
Zech, A.
Deil, C.
Wagner, P.
Steenkamp, R.
Klepser, S.
Anton, G.
Komin, Nu.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

Artykuł

na półce

Skocz do pozycji: 6.

Tytuł:: Non-destructive analysis of pathological belemnite rostra by micro-CT techniques
Autorzy:: Hoffmann, R.
Stevens, K.
Picollier, M.-C.
Mutterlose, J.
Klug, C.
Tematy:: Cephalopoda
Belemnitida
palaeopathology
rostra
micro computed-tomography
diagenesis
Jurassic
Cretaceous
Germany; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Powiązania:: https://bibliotekanauki.pl/articles/2082134.pdf Link otwiera się w nowym oknie
Opis:: Previously, palaeopathological features of fossil hardparts were often difficult to interpret because it was impossible to decipher their internal structure without destroying the specimens. We applied high-resolution computedtomo graphy (CT) to document such internal structures. This enabled us to describe a variety of pathologies of Jurassic and Cretaceous belemnite rostra. The examined rostra have been assigned to the taxa ?Acrocoelites sp., Belemnello camax spp., Belemnitella sp., Duvalia emerici, Goniocamax sp., Gonioteuthis spp., Hibolithes jaculoides, Neoclavibelus subclavatus, and Pseudobelus sp. The studied pathologies comprise rostra with two apices, bulges, pearls, broken juvenile rostra, highly porous rostra with abnormal growth increments, blunt-rostra, rostra with callus- like structures, and bent- or knee-shaped rostra. In one rostrum the apex has been turned towards the anterior (alveolus) during ontogeny. Additionally, computed-tomography data were used to document diagenetic alterations of the rostra such as silification, sedimentary infill, pyrite formation. Specimens can also be tested for the presence or absence of internal elements (septa, siphuncle) and surface features. Palaeoecological studies clearly benefit from the application of computed-tomography to gain high resolution images of otherwise invisible internal features of extinct organisms, as demonstrated herein.
Dostawca treści:: Biblioteka Nauki