Results 141 to 150 of about 64,869 (244)

A New Family and Genus of Ostracod from the Ordovician Bill's Creek Shale of Michigan [PDF]

, 1953
R. V. Kesling, R. C. Hussey
openalex  

Thicknesses of the Ordovician formations in Ontario and Quebec

, 1931
David Maddox
openalex   +1 more source

Fossils in Ordovician tuffs, northeastern Maine, with a section on Trilobita [PDF]

, 1964
Robert B. Neuman, H. B. Whittington
openalex   +1 more source

Upper Ordovician formations in the Maysville area, Kentucky [PDF]

, 1966
John H. Peck
openalex   +1 more source

The first Silurian horseshoe crab reveals details of the xiphosuran ground plan. [PDF]

Proc Biol Sci
Lamsdell JC.
europepmc   +1 more source

Saharan Ordovician Ice Age [PDF]

Science, 1971
openaire   +3 more sources

Geochemical characteristic of different-lithofacies source rocks and its implications for ultradeep hydrocarbon exploration in the lower cambrian Yuertus formation, Tarim basin. [PDF]

Sci Rep
Zeng Q, He T, Zhao Y, Zhang K, Wen Z, Xu Y, He J, Tian W, Lu S, Cheng W, Xie Z, Xue K, Ji C.   +12 more
europepmc   +1 more source

Facies Patterns and Conodont Biogeography in Arctic Alaska and the Canadian Arctic Islands: Evidence against Juxtaposition of These Areas during Early Paleozoic Time [PDF]

, 2000
Bradley, D. C., de Freitas, T. A., Dumoulin, J. A., Harris, A. G.   +3 more
core  

Paleomagnetism of Upper Vendian sediments from the Winter Coast, White Sea region, Russia: Implications for the paleogeography of Baltica during Neoproterozoic times [PDF]

, 2002
Alexander Iosifidi, Alexei Khramov, Bingen, Dalziel, Fedonkin, Fisher, Grazhdankin, Hargraves, Hoffman, Jennifer Tait, Kirschvink, Knoll, Martin, McCabe, McFadden, McKerrow, Meert, Meert, Piper, Piper, Pisarevsky, Poorter, Poorter, Powell, Smethurst, Sokolov, Storetvedt, Torsvik, Torsvik, Torsvik, Valerian Bachtadse, Van der Voo, Viktor Popov, Williams, Zijderveld   +34 more
core   +1 more source

Episodic body size variations of early Paleozoic trilobites associated with marine redox changes. [PDF]

Sci Adv
Sun Z, Zhao F, Zeng H, Erwin DH, Zhu M.
europepmc   +1 more source