Results 51 to 60 of about 4,368 (245)
Early evolutionary history of the seed
Biological Reviews, EarlyView.ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Richard M. Bateman +2 more
wiley +1 more source
Учёные записки Казанского университета: Серия Естественные наукиConodonts from the Devonian–Carboniferous boundary deposits in two wells within the Sarailinskaya Depression of the Kama-Kinel Trough System were studied.
G. M. Sungatullina +7 more
doaj +1 more source
Georesursy, 2018 The Menzelinsky, Timerovsky and Olginsky fields are located in the northeast of the Republic of Tatarstan and are associated with uplifts, sharply pronounced along the Tulskian surface of the Lower Carboniferous.
N.V. Nefyodov +4 more
doaj +1 more source
New finds of fishes in the lower uppermost Famennian (Upper Devonian) of Сentral Russia and habitats of the Khovanshchinian vertebrate assemblages [PDF]
Estonian Journal of Earth Sciences, 2018 New vertebrate finds from the Khovanshchinian Regional Stage (lower uppermost Famennian, Upper Devonian) made an important contribution to our knowledge of the composition and distribution of vertebrate assemblages in Central Russia.
Oleg A. Lebedev +3 more
doaj +1 more source
Fish assemblages from the Middle–Upper Devonian of the Middle Urals, Russia
Учёные записки Казанского университета: Серия Естественные науки, 2022 New assemblages of diverse fishes from the Givetian–Famennian were described in six sections in the Middle Urals: Pokrovskoe, Baronskaya, Sulem, Pershino, Yokva, and Vilva.
A.O. Ivanov
doaj +1 more source
ABOUT STRATIFICATION FAMENNIAN DEPOSITS SOUTH TIMAN
Oil and Gas Business, 2015 First Izhma Suite was selected for the South Timan in 1930 N. N. Tikhonovich in the study of oil deposits of the upper Devonian. Part of this Suite, they had included a wide range of rocks exposed on the right Bank of the r. Izhma. Later D. C. Obruchev (1958) as part of the Suite rocks have been identified the remains of testaceous fish Bothriolepis ...
openaire +2 more sources
Bulletin of Geosciences, 2019 diversity triggering one of the highest extinction rates in the Late Palaeozoic (Lerosey-Aubril & Feist 2012). This is essentially due to the terminal Frasnian global Kellwasser crises (Feist 1991, McNamara & Feist 2016).
R. Feist
semanticscholar +1 more source
Литосфера, 2015 The Bol’shaya Barma, Akkyr, Ryauzyak and Kuk-Karauk sections in the western slope of the South Urals are considered to be perspective sections for the identification of Famennian Regional Boundary Stratotype Point (RBSP).
R. Ch. Tagarieva, A. G. Mizens
doaj +2 more sources
New Zealand Geological Timescale 2025
New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.New Zealand Geological Timescale 2025 (NZGT 2025) is the first comprehensive update and revision of the New Zealand Geological Timescale in a decade. The criteria used to establish age ranges of New Zealand Stages within the NZGT have been reviewed, calibrated, and revised where required against the 2023/04 International Chronostratigraphic Chart and ...
Christopher D. Clowes +13 more
wiley +1 more source
Rivista Italiana di Paleontologia e Stratigrafia, 1999 Extensive tracts of Devonian and older sedimentary and igneous units occur within the axial region of the western Karakoram Block of northernmost Pakistan over a distance in excess of 200 km between the the headwaters of the Karambar valley in ...
JOHN A. TALENT +5 more
doaj +1 more source