Results 101 to 110 of about 5,414 (202)

Silurian (Llandovery) monograptids from the Vargas Peña Formation (Paraná Basin, Eastern Paraguay)

Geologica Acta, 2009
The Itacurubí Group is a siliciclastic Silurian sequence exposed in eastern Paraguay (Paraná Basin). It includes from bottom to top the Eusebio Ayala, Vargas Peña and Cariy formations.
N.J. URIZ, M.B. ALFARO, J.C. GALEANO INCHAUSTI   +2 more
doaj  

Carbon isotope composition of graptolite periderm and whole-rock from the Aeronian (Silurian, Llandovery) in Wales and Scotland and its use in chemostratigraphy

, 2010
Here we show the use of graptolite periderm for chemostratigraphic study. Using material from the Aeronian (Silurian) interval from Wales and Scotland as examples, we show that the carbon isotope composition of the periderm (δ13Cgrap.) provides a signal ...
Snelling, A.M., Leng, M.J., Zalasiewicz, J.A., Kendrick, C.C., Page, A. A., Page, Alex A., Zalasiewicz, Jan A., Snelling, Andrea M., Alex A. Page, Andrea M. Snelling, Kendrick, Christopher P., Jan A. Zalasiewicz, Leng, Melanie J., Christopher C. Kendrick, Melanie J. Leng   +14 more
core   +1 more source

Graptolite zonation in the late Wenlock (Early Silurian), with a new graptolite-brachiopod fauna from New South Wales

, 1997
The Panuara Formation at Cobblers Creek near Orange, New South Wales, Australia has yielded a graptolite-brachiopod fauna assigned to the sherrardae sub-Biozone (late Wenlock: Early Silurian).
R B Rickards (20193081), Anthony Wright (19588555)   +1 more
core  

The lower Ludlow formation and its graptolite-fauna [PDF]

, 1906
The Lower Ludlow Shales, which form the lowest section of the Ludlow division of the Silurian System, are most typically developed in the neighbourhood of the picturesque old town of Ludlow.
Wood, Ethel Mary Reader
core   +1 more source

Variational Reservoir Characteristics of the Wufeng-Longmaxi Formation from Different Sedimentary Region and Its Implications in Southeastern Sichuan Basin, China. [PDF]

ACS Omega, 2023
Li L, Liu J, Wang W, Zhao P, Lu Y.
europepmc   +1 more source

Reappraisal of the Tremadocian graptolite sequence of the Famatina System, NW Argentina [PDF]

, 2003
6 páginas (39-44), 3 figuras.-- Edited by: G. Ortega & G. F. Aceñolaza.-- Proceedings of the 7th International Graptolite Conference & Field Meeting of the International Subcommission on Silurian Stratigraphy.Financial support has been provided by the ...
Gutiérrez-Marco, J. C., Esteban, Susana B.   +1 more
core  

Rapid marine oxygen variability: Driver of the Late Ordovician mass extinction. [PDF]

Sci Adv, 2022
Kozik NP, Young SA, Newby SM, Liu M, Chen D, Hammarlund EU, Bond DPG, Them TR, Owens JD.   +8 more
europepmc   +1 more source

Interstipe webbing in the Silurian graptolite Cyrtograptus murchisoni and its palaeobiological significance. [PDF]

, 1995
Although it has long been recognized that the Graptoloidea constituted a diverse group of planktic organisms, the precise hydrodynamics of the various colony morphotypes has been a source of debate.
Underwood, Charlie J.
core  

The Early to Middle Ordovician graptolite faunal succession of the Trail Creek region, central Idaho, U.S.A

, 2021
The Middle Ordovician graptolite biostratigraphy of the Trail Creek region of Idaho is reviewed and revised. The oldest known fauna belongs to the Didymograptellus bifidus Biozone. The Isograptus victoriae lunatus, I.
Goldman, D., Cone, M., Maletz, J.
core  

Identifying Organic Matter (OM) Types and Characterizing OM Pores in the Wufeng-Longmaxi Shales. [PDF]

ACS Omega, 2022
Xie G, Hao W.
europepmc   +1 more source