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Proavis
Proavis is a hypothetical extinct species or hypothetical extinct taxon. The term was coined in the early 20th century in an attempt to support and explain the hypothetical evolutionary steps and anatomical adaptations leading from non-avian theropod dinosaurs to birds. The term has also been used by defenders of the thecodontian origin of birds. History The term "Proavis" was first coined, although under the form "Pro-Aves", by English osteologist and zoologist William Plane Pycraft in "The Origin of Birds", a 1906 article published in the magazine ''Knowledge and Scientific News''. Pycraft added to his article his own drawn depiction of the hypothetical animal, a restoration entitled "One of the Pro-Aves". Pycraft's "Pro-Avis" (singular of "Pro-Aves") was arboreal, as suggested Professor Osborn six years before, in 1900, in an article dealing with the hypothetical common ancestors of dinosaurs and birds. Pycraft assumed that birds had developed as tree-dwelling dinosaurs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Journal Of Zoology
The ''Journal of Zoology'' is a scientific journal concerning zoology, the study of animals. It was founded in 1830 by the Zoological Society of London and is published by Wiley-Blackwell. It carries original research papers, which are targeted towards general readers. Some of the articles are available via open access, depending on the author's wishes. According to the ''Journal Citation Reports'', the journal has a 2020 impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journal is a type of journal ranking. Journals with higher impact factor values are considered more prestigious or important within their field. The Impact Factor of a journa ... of 2.322, ranking it 36th out of 175 journals in the category "Zoology". From around 1833, it was known as the ''Proceedings of the Zoological Society of London'' (). From 1965 to 1984, it was known as the ''Journal of Zoology: Proceedings of the Zoological Society of London'' (). See also * List ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megalancosaurus
''Megalancosaurus'' is a genus of extinct reptile from the Late Triassic Dolomia di Forni Formation and Zorzino Limestone of northern Italy, and one of the best known drepanosaurids. The type species is ''M. preonensis''; a translation of the animal's scientific name would be "long armed reptile from the Preone Valley." Anatomy ''Megalancosaurus'' was fairly small, its adult length was only about 25 centimeters (10 inches). It was built like a chameleon and probably lived a similar arboreal lifestyle, feeding on insects and other small animals. Even its feet were chameleon like, with two toes being opposed to the remaining three. The tail is long, prehensile, and bears a strange claw-like organ made of fused vertebrae at its end. Its shoulders formed a withers that would have served as an attachment site for especially strong muscles. Some specimens have an opposable digit on the feet. Because not all members of the species appear to bear this digit, it has been speculate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alan Feduccia
John Alan Feduccia (born April 25, 1943) is a paleornithologist specializing in the origins and phylogeny of birds. He is S. K. Heninger Distinguished Professor Emeritus at the University of North Carolina. Feduccia's authored works include three major books, ''The Age of Birds'',Feduccia (1980) ''The Origin and Evolution of Birds'', and ''Riddle of the Feathered Dragons''. Feduccia opposes the overwhelming scientific consensus that birds originated from and are deeply nested within Theropoda, and are therefore living theropod dinosaurs. He has argued for an alternative theory in which birds share a common stem-ancestor with theropod dinosaurs among more basal archosaurian lineages, with birds originating from small arboreal archosaurs in the Triassic. Education Feduccia graduated with a B.S. from Louisiana State University, taking ornithological expeditions to Honduras, El Salvador and Peru. He received his M.A. and Ph.D. (1969) from the University of Michigan. Academic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linda Trueb
Linda Trueb is an American professor of herpetology and systematics biology at the University of Kansas and a senior curator emerita at the university's Biodiversity Institute. She also acts as the associate director for the Institute's Administration and Research department. Education Trueb completed a bachelor's of science in zoology at the University of Kansas in 1962 and a Ph.D. at the same university in 1968. Career Part of Trueb's career included mentoring over 30 graduate students. After establishing her own lab at the University of Kansas once graduated, Trueb focused on amphibians in the neotropics, taking many fieldwork trips there with her husband to study both amphibians and reptiles. In 1986, she and her husband published the textbook ''Biology of Amphibians'' that was to act as a key reference work on the subject. It was noted by Hans-Dieter Sues in a 2009 review of a separate work that the text "remains the best survey of the diversity and biology of extant amph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samuel Tarsitano
Samuel is a figure who, in the narratives of the Hebrew Bible, plays a key role in the transition from the biblical judges to the Kingdom of Israel (united monarchy), United Kingdom of Israel under Saul, and again in the monarchy's transition from Saul to David. He is Veneration, venerated as a prophet in Judaism, Christianity, and Islam. In addition to his role in the Bible, Samuel is mentioned in Jewish rabbinic literature, rabbinical literature, in the Christian New Testament, and in the second chapter of the Quran (although the text does not mention him by name). He is also treated in the fifth through seventh books of ''Antiquities of the Jews'', written by the Jewish scholar Josephus in the first century. He is first called "the Seer" in Books of Samuel, 1 Samuel 9:9. Biblical account Family Samuel's mother was Hannah (biblical figure), Hannah and his father was Elkanah. Elkanah lived at Ramathaim-Zophim, Ramathaim in the district of Zuph. His genealogy is also found in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dieter Stefan Peters
{{Short pages monitor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Ostrom
John Harold Ostrom (February 18, 1928 – July 16, 2005) was an American paleontologist who revolutionized the modern understanding of dinosaurs. Ostrom's work inspired what his pupil Robert T. Bakker has termed a " dinosaur renaissance". Beginning with the discovery of ''Deinonychus'' in 1964, Ostrom challenged the widespread belief that dinosaurs were slow-moving lizards (or "saurians"). He argued that ''Deinonychus'', a small two-legged carnivore, would have been fast-moving and warm-blooded. Further, Ostrom's work made zoologists question whether birds should be considered an order of Reptilia instead of their own class, Aves. The idea that dinosaurs were similar to birds was first proposed by Thomas Henry Huxley in the 1860s, but was dismissed by Gerhard Heilmann in his influential book '' The Origin of Birds'' (1926). Prior to Ostrom's work, the development of birds was generally believed to have split off early on from that of dinosaurs. Ostrom showed more bird-like tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zdeněk Burian
Zdeněk Michael František Burian (11 February 1905 – 1 July 1981) was a Czech painter, book illustrator and palaeoartist. Burian's artwork played a central role in the development of palaeontological reconstruction and he is regarded as one of the most influential palaeoartists of all time. Burian began his career as an illustrator in the 1920s and became famous in his native Czechoslovakia for his illustrations of novels, mainly adventure novels and classic works. His illustrations of the novel ''The Mammoth Hunters'' (1937) by Eduard Štorch gained the attention of the Czech palaeontologist Josef Augusta, who collaborated with Burian as a scientific advisor. Their collaboration resulted in Burian's work being used in a number of books on prehistoric life written by Augusta, culminating in a series of six great illustrated volumes published in 1956–1966, the most famous of which was ''Prehistoric Animals'' (1956). After Augusta's death in 1968, Burian worked with numerou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Josef Augusta (paleontologist)
Josef Augusta (17 March 1903, Boskovice, Moravia – 4 February 1968, Prague) was a Czech paleontologist, geologist, and science popularizer. From 1921 to 1925 Augusta studied at the Masaryk University in Brno. Between 1933 and 1968 he held posts at the Charles University in Prague as lecturer, professor, and dean of the faculty. In addition to his scientific work (about 120 publications), Augusta wrote about twenty books popularizing his profession, mostly targeted to the youth. He is best known for his reconstructions of fossil flora and fauna, together with the painter Zdeněk Burian (1905–1981). He participated as a science adviser in the movie '' Journey to the Beginning of Time'' (1954). The dinosaur '' Burianosaurus augustai'' was named after him and artist Zdenek Burian in 2017. See also * List of Czech writers Below is an alphabetical list of Czech people, Czech writers. A * Daniel Adam z Veleslavína (1546–1599), Lexicography, lexicographer, publisher, transl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Czechs
The Czechs (, ; singular Czech, masculine: ''Čech'' , singular feminine: ''Češka'' ), or the Czech people (), are a West Slavs, West Slavic ethnic group and a nation native to the Czech Republic in Central Europe, who share a common Bohemia, ancestry, Czech culture, culture, History of the Czech lands, history, and the Czech language. Ethnic Czechs were called Bohemians in English language, English until the early 20th century, referring to the former name of their country, Bohemia, which in turn was adapted from the late Iron Age tribe of Celtic Boii. During the Migration Period, West Slavic Bohemians (tribe), tribes settled in the area, "assimilated the remaining Celtic and Germanic populations", and formed a principality in the 9th century, which was initially part of Great Moravia, in form of Duchy of Bohemia and later Kingdom of Bohemia, the predecessors of the modern republic. The Czech diaspora is found in notable numbers in the Czech American, United States, Germany ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerhard Heilmann
Gerhard Heilmann (later sometimes spelt "Heilman") (25 June 1859 – 26 March 1946) was a Danish artist and paleontologist who created artistic depictions of ''Archaeopteryx'', '' Proavis'' and other early bird relatives apart from writing the 1926 book '' The Origin of Birds'', a pioneering and influential account of bird evolution. Heilmann lacked a formal training in science although he studied medicine briefly before shifting to art. His ideas on bird evolution were first written in Danish in the ''Dansk Ornitologisk Tidsskrift''. Heilmann received little help and often got considerable opposition from Danish professional zoologists of the time and he in turn often made dismissive remarks on the ideas of some of the established scientists of the time. The English edition however reached out to a much larger audience and influenced ideas in bird evolution for nearly half a century. Life Heilmann was born in Skelskør, Denmark where his father was a pharmacist. He joined a p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
