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1935 In Paleontology
Plants Conifers Flowering plants Arthropods Insects Sauropterygians New taxa Vertebrates Expeditions, field work, and fossil discoveries * Charles Gilmore returned to prospect for fossils in the Two Medicine Formation The Two Medicine Formation is a geological formation, or rock body, in northwestern Montana and southern Alberta that was deposited between and (million years ago), during Campanian (Late Cretaceous) time. It crops out to the east of the Rocky M ....Trexler, D., 2001, Two Medicine Formation, Montana: geology and fauna: In: Mesozoic Vertebrate Life, edited by Tanke, D. H., and Carpenter, K., Indiana University Press, pp. 298–309. Institutions and organizations * The Calgary Public Museum of Alberta, Canada closed due to financial problems triggered by the Great Depression. By this point the museum had accumulated roughly 7500 different items of both natural and man-made origin. The collections were stored in another Calgary building called ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Callitris Potlatchensis
''Callitris'' is a genus of coniferous trees in the Cupressaceae (cypress family). There are 16 recognized species in the genus, of which 13 are native to Australia and the other three (''C. neocaledonica, C. sulcata'' and ''C. pancheri'') native to New Caledonia. Traditionally, the most widely used common name is cypress-pine, a name shared by some species of the closely related genus ''Actinostrobus''.Eckenwalder, J.E. 2009. ''Conifers of the World: The Complete Reference''. Timber Press. p. 122-124 Description They are small to medium-sized trees or large shrubs, reaching tall (to in ''C. macleayana''). The leaves are evergreen and scale-like. But young seedlings have needle-like leaves; in ''C. macleayana'', needle-like leaves are found mixed with scale leaves throughout the tree's life. The scales are arranged in six rows along the twigs, in alternating whorls of three (often in whorls of four in ''C. macleayana''). The male cones are small, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alder
Alders are trees comprising the genus ''Alnus'' in the birch family Betulaceae. The genus comprises about 35 species of monoecious trees and shrubs, a few reaching a large size, distributed throughout the north temperate zone with a few species extending into Central America, as well as the northern and southern Andes. Description With a few exceptions, alders are deciduous, and the leaves are alternate, simple, and serrated. The flowers are catkins with elongate male catkins on the same plant as shorter female catkins, often before leaves appear; they are mainly wind-pollinated, but also visited by bees to a small extent. These trees differ from the birches (''Betula'', another genus in the family) in that the female catkins are woody and do not disintegrate at maturity, opening to release the seeds in a similar manner to many conifer cones. The largest species are red alder (''A. rubra'') on the west coast of North America, and black alder (''A. glutinosa''), native ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celastrus Dignatus
''Celastrus'', commonly known as staff vine, staff tree or bittersweet, is a genus in the family Celastraceae which comprises about 30-40 species of shrubs and vines. They have a wide distribution in East Asia, Australasia, Africa, and the Americas. The leaves are alternate and simple, ovoid, and typically long. The flowers are small, white, pink or greenish, and borne in long panicles; the fruit is a three-valved berry. In North America, they are known as bittersweet, presumably a result of confusion with the unrelated bittersweet (''Solanum dulcamara'') by early colonists. '' C. orbiculatus'' is a serious invasive weed in much of eastern North America. Selected species *''Celastrus angulatus'' Maxim. – Chinese staff vine *''Celastrus australis'' – Australian staff vine *''Celastrus dispermus'' – orange boxwood *''Celastrus flagellaris'' Rupr. *''Celastrus gemmatus'' Loes. *''Celastrus hindsii'' Benth. *''Celastrus monospermus'' Roxb. *''Celastrus orbiculatus'' Thu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amelanchier
''Amelanchier'' ( ), also known as shadbush, shadwood or shadblow, serviceberry or sarvisberry (or just sarvis), juneberry, saskatoon, sugarplum, wild-plum or chuckley pear,A Digital Flora of Newfoundland and Labrador Vascular Plants/ref> is a genus of about 20 species of deciduous-leaved shrubs and small trees in the rose family (Rosaceae). ''Amelanchier'' is native to temperate regions of the Northern Hemisphere, growing primarily in early successional habitats. It is most diverse taxonomically in North America, especially in the northeastern United States and adjacent southeastern Canada, and at least one species is native to every U.S. state except Hawaii and to every Canadian province and territory. Two species also occur in Asia, and one in Europe. The taxonomic classification of shadbushes has long perplexed botanists, horticulturalists, and others, as suggested by the range in number of species recognized in the genus, from 6 to 33, in two recent publications. A major so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1931 In Paleontology
Paleozoology Arthropods Insects Vertebrates Conodonts Jawless fish Edward Branson and Maurice Mehl described the extinct genus of heterostracan agnathan ''Cardipeltis'' in the Jefferson Formation of Utah.Fishes of the Jefferson Formation of Utah. E. B. Branson and M. G. Mehl, The Journal of Geology ''The Journal of Geology'' publishes research on geology, geophysics, geochemistry, sedimentology, geomorphology, petrology, plate tectonics, volcanology, structural geology, mineralogy, and planetary sciences. Its content ranges from planetary evo ..., Vol. 39, No. 6 (Aug. - Sep., 1931), pages 509-531Stable URL retrieved 29 April 2016) Newly named archosauromorphs = Dinosaurs = Data courtesy of George Olshevsky's dinosaur genera list. Synapsids = Non-mammalian = References {{portal, Paleontology 1930s in paleontology Paleontology 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amelanchier Scudderi
''Amelanchier'' ( ), also known as shadbush, shadwood or shadblow, serviceberry or sarvisberry (or just sarvis), juneberry, saskatoon, sugarplum, wild-plum or chuckley pear,A Digital Flora of Newfoundland and Labrador Vascular Plants/ref> is a genus of about 20 species of deciduous-leaved shrubs and small trees in the rose family (Rosaceae). ''Amelanchier'' is native to temperate regions of the Northern Hemisphere, growing primarily in early successional habitats. It is most diverse taxonomically in North America, especially in the northeastern United States and adjacent southeastern Canada, and at least one species is native to every U.S. state except Hawaii and to every Canadian province and territory. Two species also occur in Asia, and one in Europe. The taxonomic classification of shadbushes has long perplexed botanists, horticulturalists, and others, as suggested by the range in number of species recognized in the genus, from 6 to 33, in two recent publications. A major so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1908 In Paleontology
Arthropoda Newly named insects Archosauromorphs Newly named basal archosauromorphs Newly named dinosaurs Data courtesy of George Olshevsky's dinosaur genera list. Synapsids Non-mammalian References {{portal, Paleontology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amelanchier Peritula
''Amelanchier'' ( ), also known as shadbush, shadwood or shadblow, serviceberry or sarvisberry (or just sarvis), juneberry, saskatoon, sugarplum, wild-plum or chuckley pear,A Digital Flora of Newfoundland and Labrador Vascular Plants/ref> is a genus of about 20 species of deciduous-leaved shrubs and small trees in the rose family (Rosaceae). ''Amelanchier'' is native to temperate regions of the Northern Hemisphere, growing primarily in early successional habitats. It is most diverse taxonomically in North America, especially in the northeastern United States and adjacent southeastern Canada, and at least one species is native to every U.S. state except Hawaii and to every Canadian province and territory. Two species also occur in Asia, and one in Europe. The taxonomic classification of shadbushes has long perplexed botanists, horticulturalists, and others, as suggested by the range in number of species recognized in the genus, from 6 to 33, in two recent publications. A major so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1927 In Paleontology
Mollusks Gastropods Archosauromorphs Newly named dinosaurs Data courtesy of George Olshevsky's dinosaur genera list. Newly named birds Synapsids Non-mammalian Mammals Cetaceans References {{portal, Paleontology [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
