1954 In Paleontology

picture info	1954 In Paleontology Plants Angiosperms Arthropods Insects Archosauromorphs Phytosaurs Dinosaurs Data courtesy of George Olshevsky's dinosaur genera list. Synapsids Pelycosaurs Eutherians Cetaceans References {{portal, Paleontology 1950s in paleontology Paleontology Paleontology 4 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Icacinaceae The Icacinaceae, also called the white pear family, are a family of flowering plants,"Icacinaceae" At: Angiosperm Phylogeny Website At: Missouri Botanical Garden Website (see ''External links'' below). consisting of trees, shrubs, and lianas, primarily of the tropics. The family was traditionally circumscribed quite broadly, with around 55 genera totalling over 400 species. In 2001, though, this circumscription was found to be polyphyletic, and the family was split into four families in three different orders: Icacinaceae '' sensu stricto'' (then unplaced at order rank), Pennantiaceae (Apiales), Stemonuraceae ( Aquifoliales) and Cardiopteridaceae (also Aquifoliales). Other genera have later been moved to Metteniusaceae (Metteniusales),Stull, G. W., R. Duno de Stefano, D. E. Soltis, and P. S. Soltis (2015). Resolving Basal Lamiid Phylogeny and the Circumscription of Icacinaceae with a Plastome-Scale Data Set. American Journal of Botany 102, no. 11: 1794–1813. doi:10.3732/ajb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	1994 In Paleontology Plants Conifers Angiosperms Arthropods Insects Molluscs Bivalves Fishes Newly named bony fishes Archosauromorphs * Aff. Rebbachisaurus gastroliths documented.Calvo (1994). Sanders, Manley, and Carpenter (2001), "Table 12.1" page 167. * The " Talkeetna Mountains Hadrosaur" specimen was discovered in a quarry being excavated for road material. The quarry is near the Glenn Highway, approximately 150 miles northeast of Anchorage. That fall, excavation began, and was resumed in the summer of 1996. Newly named pseudosuchians Newly named basal dinosauromorphs Newly named dinosaurs Data courtesy of George Olshevsky's dinosaur genera list. Birds Plesiosaurs * Plesiosaur gastroliths documented.Martin (1994). Sanders, Manley, and Carpenter (2001), "Table 12.1" page 167. New taxa Pterosaurs New taxa Other diapsids New taxa Footnotes {{Reflist, , refs= "Introduction," in Pasche and May (2001); page 220. "Location and Geologic Setting," in Pasche and May (200 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Tupelo Tupelo , genus ''Nyssa'' , is a small genus of deciduous trees with alternate, simple leaves. It is sometimes included in the subfamily Nyssoideae of the dogwood family, Cornaceae, but is placed by other authorities in the family Nyssaceae. In the APG IV system, it is placed in Nyssaceae. Most ''Nyssa'' species are highly tolerant of wet soils and flooding, and some need such environments as habitat. Some of the species are native to eastern North America, from southeastern Canada through the Eastern United States to Mexico and Central America. Other species are found in eastern and southeastern Asia, from China south through Indochina to Java and southwest to the Himalayas. Names The genus name ''Nyssa'' refers to a Greek water nymph. The name tupelo, the common name used for ''Nyssa'', is of Native American origin, coming from the Cree words ''ito'' 'tree' and ''opilwa'' 'swamp'; it was in use by the mid-18th century. This tree should not be confused with the tulip p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Clarno Formation Clarno may refer to: Locations Clarno, Oregon Clarno, Wisconsin *Clarno (community), Wisconsin Clarno Township, Lake County, South Dakota Other * Clarno Formation, an Eocene geologic formation in Central Oregon * Beverly Clarno Beverly A. Clarno (born March 29, 1936) is an American politician who served as the 27th Oregon Secretary of State from 2019 to 2021. She was the only Republican statewide official in Oregon at the time. Clarno previously served as a member of t ... , politician in the U.S. state of Oregon {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Middle Eocene The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', "dawn") and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope 13C in the atmosphere was exceptionally low in comparison with the more common isotope 12C. The end is set at a major extinction event called the ''Grande Coupure'' (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Siberia and in what is now Chesapeake Bay. As with other geologic periods, the strata that define the start and end ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Nyssa Spatulata ''Nyssa spatulata'' is an extinct species of flowering plant in the tupelo family, Nyssaceae known from the middle Eocene sediments exposed in north central Oregon. The species was first described from a series of isolated fossil seeds in chert. History and classification ''N. spatulata'' has been identified from a single location in the Clarno Formation, the Clarno nut beds, type locality for both the formation and the species. The nut beds are approximately east of the unincorporated community of Clarno, Oregon, and considered to be middle Eocene in age, based on averaging zircon fission track radiometric dating which yielded an age of 43.6 and 43.7 ± 10 million years ago and Argon–argon dating radiometric dating which yielded a 36.38 ± 1.31 to 46.8 ± 3.36 mya date. The average of the dates resulted in an age range of 45 to 43 mya. The beds are composed of silica and calcium carbonate cemented tuffaceous sandstones, siltstones, and conglomerates which preserve eith ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	2021 In Paleobotany This article records new taxa of fossil plants that are scheduled to be described during the year 2021, as well as other significant discoveries and events related to paleobotany that are scheduled to occur in the year 2021. Ferns and fern allies Bennettitales Cycadales Ginkgoales Vladimariales Conifers Araucariaceae Cheirolepidiaceae Cupressaceae Pinaceae Podocarpaceae Other conifers Flowering plants Basal angiosperms Unplaced non-eudicots Magnoliids Canellales Monocots Alismatid monocots Lilioid monocots Commelinid monocots =Commelinid monocot research= * A study on the evolutionary history of palms throughout the Cenozoic era, aiming to determine the impact of Cenozoic environmental changes on the diversification and biogeography of palms, is published by Lim ''et al.'' (2021). * Pollens of member of the family Poaceae preserving the same morphological characteristics as that of modern cereal grains are described from a sedimentary core from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]