silurian gray
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Burgsvik beds — The Burgsvik beds are a sequence of shallow marine limestones and sandstones found near the town of Burgsvik in the southern part of Gotland, Sweden. The beds were deposited in the Upper Silurian period, around Ma|420, in warm, equatorial waters… … Wikipedia
Ornatifilum — Temporal range: Late Silurian (Wenlock) Early Devonian (Lochkovian)[1] An Ornatifilum like fossil, identical to those described by Sherwood Pike and Gray … Wikipedia
Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… … Universalium
Clinton Group — Stratigraphic range: Late Silurian Rocks of the Clinton Group on the east face of Schuylkill Gap Type sedimentary Sub units Rochester Shale … Wikipedia
Evolutionary history of plants — Plants have evolved through increasing levels of complexity, from the earliest algal mats, through bryophytes, lycopods, ferns and gymnosperms to the complex angiosperms of today. While the simple plants continue to thrive, especially in the… … Wikipedia
Delaware Water Gap — Delaware Water Gap, Pennsylvania is also a town located near the gap. Delaware Water Gap The Delaware Water Gap from Kittatinny (I 80 on the left) … Wikipedia
Nematothallus — Temporal range: Ludfordian–Downtonian … Wikipedia
Evolution — Evolution (History and Scientific Foundation) † Catholic Encyclopedia ► Evolution (History and Scientific Foundation) The world of organisms comprises a great system of individual forms generally classified according to structural… … Catholic encyclopedia
Ordovician — Period 488.3–443.7 million years ago … Wikipedia
Europe — /yoor euhp, yerr / for 1; /yoo roh pee, yeuh / for 2, n. 1. a continent in the W part of the landmass lying between the Atlantic and Pacific oceans, separated from Asia by the Ural Mountains on the E and the Caucasus Mountains and the Black and… … Universalium
