Results 191 to 200 of about 11,709 (248)

Comprehensive study on impact of hydrogen peroxide decomposition on the crucial parameters of OSM-type energetic materials. [PDF]

Sci Rep
Polis M, Stolarczyk A, Szydło K, Fabin M, Pytlik M, Lisiecka B, Jarosz T.   +6 more
europepmc   +1 more source

Swiss ichthyosaurs: a review. [PDF]

Swiss J Palaeontol
Klug C, Sivgin T, Miedema F, Scheffold B, Reisdorf AG, Stössel I, Maxwell EE, Scheyer TM.   +7 more
europepmc   +1 more source

Exceptionally preserved shark fossils from Mexico elucidate the long-standing enigma of the Cretaceous elasmobranch <i>Ptychodus</i>. [PDF]

Proc Biol Sci
Vullo R, Villalobos-Segura E, Amadori M, Kriwet J, Frey E, González González MA, Padilla Gutiérrez JM, Ifrim C, Stinnesbeck ES, Stinnesbeck W.   +9 more
europepmc   +1 more source

Fossil evidence for the ancient link between clonal fragmentation, six-fold symmetry and an epizoic lifestyle in asterozoan echinoderms. [PDF]

Proc Biol Sci
Thuy B, Numberger-Thuy LD, Härer J, Kroh A, Winkler V, Schweigert G.   +5 more
europepmc   +1 more source

Uncertainty in the timing of diversification of flowering plants rests with equivocal interpretation of their fossil record. [PDF]

R Soc Open Sci
Clark JW, Donoghue PCJ.
europepmc   +1 more source

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Sr-isotope stratigraphy (87Sr/86Sr) of the lowermost Toarcian of Peniche, Portugal, and its relation to ammonite zonations

, 2020
At Peniche, Portugal, the GSSP for the base of the Toarcian and in a Submediterranean province, a value of 0.707 073 ± 0.000 002 (2s.e., n = 13) is determined for 87Sr/86Sr at the base of the Toarcian.
J. McArthur, K. Page, L. V. Duarte, M. Thirlwall, Q. Li, R. Weis, M. J. Comas-Rengifo   +6 more
semanticscholar   +1 more source

Ion microprobe–measured stable isotope evidence for ammonite habitat and life mode during early ontogeny

Paleobiology, 2018
. Ammonites have disparate adult morphologies indicative of diverse ecological niches, but ammonite hatchlings are small (~1mm diameter), which raises questions about the similarity of egg incubation and hatchling life mode in ammonites.
B. Linzmeier, N. Landman, S. Peters, R. Kozdon, K. Kitajima, J. Valley   +5 more
semanticscholar   +1 more source

Isotope sclerochronology of ammonites (Baculites Compressus) from methane seep and non-seep sites in the Late Cretaceous Western Interior Seaway, USA: Implications for ammonite habitat and mode of life

American Journal of Science, 2018
Ammonites, as well as other fauna, were common in methane seeps of the Late Cretaceous Western Interior Seaway (WIS) of North America. Biogeochemical processes at the seeps, in particular the anaerobic oxidation of methane, produced a dissolved inorganic
N. Landman, J. Cochran, M. Slovacek, Neal L. Larson, M. Garb, Jamie Brezina, J. Witts   +6 more
semanticscholar   +1 more source

The Cretaceous ammonite Ammonites requienianus d'Orbigny, 1841

1984
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Kennedy, W. J. (William James), Wright, C. W. (Claud William)   +1 more
openaire   +1 more source