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19 hours ago · Winged seeds evolved numerous times in many lineages of extinct and extant seed plants (spermatophytes) 4,5. Lacking wings as integumentary outgrowths, the earliest ovules in the Famennian (372-359 million years ago [Ma], Late Devonian) rarely played a role in wind dispersal 6 .
3 days ago · Brontosaurus is a genus in the subfamily Apatosaurinae, which includes only it and Apatosaurus, which are distinguished by their firm builds and thick necks. Although Apatosaurinae was named in 1929, the group was not used validly until an extensive 2015 paper, which found Brontosaurus to be valid.
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Which group of ferns dominated during the Carboniferous period?
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When were fossils first discovered?
4 days ago · M. scheuchzeri is a seed fern (Pteridospermatophyta), which is a group of plants that went extinct during the late Cretaceous Period. They first show up in the fossil record during the late Devonian.
4 days ago · In the red layers of the Hermit Shale, plant fossils can be found in the mudstone and siltstone left behind by an ancient river system. Indicated by these fossils is a semi-arid climate, with drought-adapted seed ferns, horsetails, small pines, ginkgos, and a noticeable absence of true ferns.
4 days ago · The newly discovered creature lived around 308 million years ago and was only around 0.5 inches in length, scientists report.
2 days ago · First proposed by: William Daniel Conybeare and William Phillips, 1822: Time span formality: Formal: Lower boundary definition: FAD of the Conodont Siphonodella sulcata (discovered to have biostratigraphic issues as of 2006) Lower boundary GSSP: La Serre, Montagne Noire, France
3 days ago · The first apatosaurine fossils were discovered by Arthur Lakes, a local miner, and his friend Henry C. Beckwith in the spring of 1877 in Morrison, a town in the eastern foothills of the Rocky Mountains in Jefferson County, Colorado.
