Results 91 to 100 of about 34,448 (232)

Lower Mississippian Lithostratigraphy, Northern Arkansas [PDF]

, 1976
Lower Mississippian lithostratigraphic units in northern Arkansas are (ascending order) the Bachelor, St. Joe, and Boone Formations. These formations disconformably overlie Middle Ordovician to Upper Devonian strata and are overlain disconformably by ...
Manger, Walter L., Shanks, Jack L.
core   +2 more sources

Pyrope of the Tsilma Uplift (Middle Timan) as an indicator of primary diamond sources [PDF]

Минералогия
The paper presents the results of study of pyrope from the Tsilma Uplift (northern Middle Timan) in Quaternary sediments and Middle Devonian terrigenous rocks of the Tsilma River basin.
A.A. Parkhachev, Yu.V. Glukhov, K.G. Parkhacheva, B.A. Makeev, M.Yu. Sokerin   +4 more
doaj   +1 more source

Unraveling the hidden paleobiodiversity of the Middle Devonian (Emsian) crinoids (Crinoidea, Echinodermata) from Poland. [PDF]

PeerJ, 2022
Ausich WI, Salamon MA, Płachno BJ, Brachaniec T, Krawczyński W, Boczarowski A, Paszcza K, Łukowiak M, Gorzelak P.   +8 more
europepmc   +1 more source

Analysis of Devonian shale gas accumulation conditions in Nandan-Liuzhou area of Guangxi Province

Youqi dizhi yu caishoulu
Nandan-Liuzhou area of Guangxi Province is located in Guizhong Depression. The platform basin facies with the primary lithology of siliceous mudstone and the platform shelf facies with the primary lithology of calcareous mudstone are widely distributed ...
LI Hao, ZHANG Yingjie
doaj   +1 more source

Stratigraphic distribution and systematic composition of the Middle-Upper Devonian placoderms (anti-archs) from Central Kazakhstan

Известия высших учебных заведений: Геология и разведка, 2016
The stratigraphie distribution and systematic composition of the Middle-Upper Devonian remains of antiarchs from the sediments of Central Kazakhstan are analyzed. Central Kazakhstan ichthyofauna contains mainly endemic taxons of antiarchs.
S. V. Moloshnikov
doaj   +1 more source

A Middle Devonian vernal pool ecosystem provides a snapshot of the earliest forests. [PDF]

PLoS One, 2021
Khudadad.
europepmc   +1 more source

A large Middle Devonian eubrachythoracid 'placoderm' (Arthrodira) jaw from northern Gondwana. [PDF]

Swiss J Palaeontol, 2021
Jobbins M, Rücklin M, Argyriou T, Klug C.   +3 more
europepmc   +1 more source

Nueva información palinológica sobre la Formación Poti (Viseano superior) en el arroyo Roncador, Cuenca Parnaíba, noreste de Brasil [PDF]

, 2014
Se presenta el resultado del análisis palinológico de seis muestras de superficie de la Formación Poti expuesta en el arroyo Roncador (Jerumenha, Piauí), noreste de Brasil.
Di Pasquo Lartigue, Maria, Iannuzzi, R.
core   +1 more source

Rare earth element geochemistry of Middle Devonian reefal limestones of the Dianqiangui Basin, South China: implications for nutrient sources and expansion of the reef ecosystem. [PDF]

PeerJ, 2022
Mao Q, Gu S, Li H, Lash GG, Zhang T, Xie X, Guo Z.   +6 more
europepmc   +1 more source

Early evolutionary history of the seed

Biological Reviews, Volume 101, Issue 3, Page 1511-1553, June 2026.
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, Alan R. T. Spencer, Jason Hilton   +2 more
wiley   +1 more source