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Faveoloolithidae
Faveoloolithidae is an oofamily of dinosaur eggs. It contains '' Faveoloolithus'', '' Hemifaveoloolithus'', ''Parafaveoloolithus'', and probably '' Sphaerovum''. However, unlike the other Faveoloolthids, ''Sphaerovum'' has compactituberculate ornamentation more similar to megaloolithids. Like Dictyoolithidae, the membrane and the calcareous part of the eggshell formed simultaneously instead of forming the membrane before the calcareous like modern birds.Z.-K. Zhao. (1994) "Dinosaur eggs in China:On the structure and evolution of eggshells." In K. Carpenter, K. F. Hirsch, and J. R. Horner (eds.), ''Dinosaur Eggs and Babies,'' Cambridge University Press, Cambridge. Cambridge. pp. 184–203. See also * List of dinosaur oogenera Egg fossils are the fossilized remains of eggs laid by ancient animals. As evidence of the physiological processes of an animal, egg fossils are considered a type of trace fossil. Under rare circumstances a fossil egg may preserve the remains of t ... ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dictyoolithidae
Dictyoolithidae is an oofamily of dinosaur eggs which have a distinctive reticulate organization of their eggshell units. They are so far known only from Cretaceous formations in China. Distribution All known dictyoolithids are known from the Cretaceous of China; they have been found in Henan, Zhejiang, and Shandong, from the Liuyemiao Formation, the Zhaoying Formation, Chichengshan Formation, and the Wangshi Group. History Dictyoolithidae was first described in 1994 by the Chinese paleontologist Zhao Zikui; he named only a single oogenus, ''Dictyoolithus'', with two oospecies: ''D. neixiangensis'' and ''D. hongpoensis''. Because excavations were still going on at the time, however, Zhao did not provide a detailed description. After that, dictyoolithids received little attention in the scientific literature because of the rarity of their fossils. However, in 2013 Chinese paleontologists Wang Qiang, Zhao Zikui, Wang Xiaolin, Zhang Shukang, and Jiang Yan'gen discovered n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sphaerovum
''Sphaerovum'' is an oogenus of dinosaur egg that has only been discovered in South America. History ''Sphaerovum'' was first described, along with '' Tacuarembovum'', in 1980 by paleontologist Alvaro Mones, following their discovery at the Asencio Formation in Uruguay. This was one of the first discoveries of fossil dinosaur eggs in South America.Mones, A. (1980) "Nuevos elementos de la paleoherpetofauna del Uruguay (Crocodilia y Dinosauria)." ''Actas II Congreso Argentino de Paleontologia y Bioestratigrafia y I Congreso Latinoamericano, Buenos Aires'' 1:265-277 (in Spanish) Distribution Fossils of ''Sphaerovum'' and ''Sphaerovum''-like eggs are known from the Puerto Yeruá, Allen and Colorado Formations in Argentina and the Guichón and Asencio Formations of Uruguay. They are always found in Campanian- or Maastrichtian-aged rocks, leading to their use as index fossils. Description ''Sphaerovum'' eggs are 15-20 cm in diameter, with a shell between 4.2 and 5.5 mm thick. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemifaveoloolithus
''Hemifaveoloolithus'' is an oogenus of fossil dinosaur egg from the Tiantai basin in Zhejiang Province, China. It is a faveoloolithid, having spherical eggs roughly 13 cm in diameter. The shell is distinctive for being composed of four or five superimposed layers of shell units, and the honeycomb-like arrangement of pore canals.Wang Qiang, Zhao Zi-kui, Wang Xiao-lin, and Jiang Yan-gen. (2011)New ootypes of dinosaur eggs from the Late Cretaceous in Tiantai Basin, Zhejiang Province, China. ''Vertebrata PalAsiatica'' 49(4):446–449. History During the 21st century, a great diversity of fossil eggs have been described from the Tiantai Basin. In 2011, paleontologists at the Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences Wang Qiang, Zhao Zikui, and Wang Xiaolin teamed up with Jiang Yan'gen from the Tiantai Bureau of Land and Resources of Zhejiang Province to report the discovery of several new ootaxa at Tiantai, including ''Hemifaveol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parafaveoloolithus
''Parafaveoloolithus'' is an oogenus of Faveoloolithid fossil egg, known from the Cretaceous of China.Zhang, S.K. 2010A parataxonomic revision of the Cretaceous faveoloolithid eggs of China ''Vertebrata PalAsiatica'' 48(3):203-219 Description ''Parafaveoloolithus'' is diagnosed by its spherical or oval eggs, with a single layer of eggshell units (or a two superimposed layers in some portions). The growth lines of the shell units are undefined. Shell units are prismatic, and separated near the surface of the eggshell. Oospecies ''Parafaveoloolithus'' contains six oospecies: * ''P. microporus'' - Spherical eggs from the Tiantai basin with a single layer of eggshell units. They are roughly 14 cm in diameter, with an eggshell that is 2.2-2.35 mm thick. It is very similar to '' Faveoloolithus ningxiaensis''. * ''P. xipingensis'' - Described in 1998 as a species of ''Youngoolithus''. It is from the Upper Cretaceous of Xixia County, Henan Province.Fang X.S., Lu L.W., Cheng Z. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oofamily
Egg fossils are the fossilized remains of eggs laid by ancient animals. As evidence of the physiological processes of an animal, egg fossils are considered a type of trace fossil. Under rare circumstances a fossil egg may preserve the remains of the once- developing embryo inside, in which case it also contains body fossils. A wide variety of different animal groups laid eggs that are now preserved in the fossil record beginning in the Paleozoic. Examples include invertebrates like ammonoids as well as vertebrates like fishes, possible amphibians, and reptiles. The latter group includes the many dinosaur eggs that have been recovered from Mesozoic strata. Since the organism responsible for laying any given egg fossil is frequently unknown, scientists classify eggs using a parallel system of taxonomy separate from but modeled after the Linnaean system. This "parataxonomy" is called ''veterovata''. History The first named oospecies was '' Oolithes bathonicae'', a name given provisi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Dinosaur Oogenera
Egg fossils are the fossilized remains of eggs laid by ancient animals. As evidence of the physiological processes of an animal, egg fossils are considered a type of trace fossil. Under rare circumstances a fossil egg may preserve the remains of the once- developing embryo inside, in which case it also contains body fossils. A wide variety of different animal groups laid eggs that are now preserved in the fossil record beginning in the Paleozoic. Examples include invertebrates like ammonoids as well as vertebrates like fishes, possible amphibians, and reptiles. The latter group includes the many dinosaur eggs that have been recovered from Mesozoic strata. Since the organism responsible for laying any given egg fossil is frequently unknown, scientists classify eggs using a parallel system of taxonomy separate from but modeled after the Linnaean system. This "parataxonomy" is called ''veterovata''. History The first named oospecies was '' Oolithes bathonicae'', a name given provisi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turonian
The Turonian is, in the ICS' geologic timescale, the second age in the Late Cretaceous Epoch, or a stage in the Upper Cretaceous Series. It spans the time between 93.9 ± 0.8 Ma and 89.8 ± 1 Ma (million years ago). The Turonian is preceded by the Cenomanian Stage and underlies the Coniacian Stage. At the beginning of the Turonian an oceanic anoxic event (OAE 2) took place, also referred to as the Cenomanian-Turonian boundary event or the "Bonarelli Event". Stratigraphic definition The Turonian (French: ''Turonien'') was defined by the French paleontologist Alcide d'Orbigny (1802–1857) in 1842. Orbigny named it after the French city of Tours in the region of Touraine (department Indre-et-Loire), which is the original type locality. The base of the Turonian Stage is defined as the place where the ammonite species '' Watinoceras devonense'' first appears in the stratigraphic column. The official reference profile (the GSSP) for the base of the Turonian is located in the Roc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maastrichtian
The Maastrichtian () is, in the ICS geologic timescale, the latest age (uppermost stage) of the Late Cretaceous Epoch or Upper Cretaceous Series, the Cretaceous Period or System, and of the Mesozoic Era or Erathem. It spanned the interval from . The Maastrichtian was preceded by the Campanian and succeeded by the Danian (part of the Paleogene and Paleocene). The Cretaceous–Paleogene extinction event (formerly known as the Cretaceous–Tertiary extinction event) occurred at the end of this age. In this mass extinction, many commonly recognized groups such as non-avian dinosaurs, plesiosaurs and mosasaurs, as well as many other lesser-known groups, died out. The cause of the extinction is most commonly linked to an asteroid about wide colliding with Earth, ending the Cretaceous. Stratigraphic definitions Definition The Maastrichtian was introduced into scientific literature by Belgian geologist André Hubert Dumont in 1849, after studying rock strata of the Chalk Group c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Faveoloolithus
''Faveoolithus'' is an oogenus of dinosaur egg. The oogenus contains two oospecies, ''F. ningxiaensis'' and ''F. zhangi''.''Faveoolithus'' at .org Distribution Fossil eggs of ''Faveoolithus'' have been found in: * Chahanaobao and the , China * Campanian[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dinosaur Eggs
Dinosaur eggs are the organic vessels in which a dinosaur embryo develops. When the first scientifically documented remains of non-avian dinosaurs were being described in England during the 1820s, it was presumed that dinosaurs had laid eggs because they were reptiles. In 1859, the first scientifically documented dinosaur egg fossils were discovered in France by Jean-Jacques Poech, although they were mistaken for giant bird eggs (birds were not yet recognized as dinosaurs at the time). The first scientifically recognized non-avian dinosaur egg fossils were discovered in 1923 by an American Museum of Natural History crew in Mongolia. Dinosaur eggshell can be studied in thin section and viewed under a microscope. The interior of a dinosaur egg can be studied using CAT scans or by gradually dissolving away the shell with acid. Sometimes the egg preserves the remains of the developing embryo inside. The oldest known dinosaur eggs and embryos are from ''Massospondylus'', which lived ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megaloolithidae
Megaloolithidae is an oofamily of fossil egg of the Dinosauroid-spherulitic morphotype. They probably are the eggs of sauropods. Paleopathology Multilayered shell Megaloolithid eggs with multiple layers of eggshell have been preserved in the fossil record. Multilayered fossil eggs resemble those of modern forms in sometimes having incomplete extra layers and pore canals that don't properly align. The misalignment of the pore canals can prevent oxygen from getting to the embryo and cause it to suffocate. The term ''ovum in ovo'' has been used for multilayered dinosaur eggs although this is inaccurate use of the term. The greater abundance may indicate that these eggs were more prone to such pathologies, but are most likely due to a larger sample size of them. Megaloolithid eggs with a discretispherulitic morphotype In biology, polymorphism is the occurrence of two or more clearly different morphs or forms, also referred to as alternative ''phenotypes'', in the population ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indiana University Press
Indiana University Press, also known as IU Press, is an academic publisher founded in 1950 at Indiana University that specializes in the humanities and social sciences. Its headquarters are located in Bloomington, Indiana. IU Press publishes 140 new books annually, in addition to 39 academic journals, and maintains a current catalog comprising some 2,000 titles. Indiana University Press primarily publishes in the following areas: African, African American, Asian, cultural, Jewish, Holocaust, Middle Eastern studies, Russian and Eastern European, and women's and gender studies; anthropology, film studies, folklore, history, bioethics, music, paleontology, philanthropy, philosophy, and religion. IU Press undertakes extensive regional publishing under its Quarry Books imprint. History IU Press began in 1950 as part of Indiana University's post-war growth under President Herman B Wells. Bernard Perry, son of Harvard philosophy professor Ralph Barton Perry, served as the first d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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