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Incognitoolithus
''Incognitoolithus'' is an oogenus of medioolithid fossil bird egg. It is notable for bearing evidence of predation, possibly from a bird pecking the eggshell. Distribution ''Incognitoolithus'' fragments are found at two localities in the DeBeque Formation in Garfield County, Colorado. Both localities are dated to the Early Eocene. History Eggshell fragments of ''Incognitoolithus'' were discovered in 1977 and 1979 during two separate field seasons. The oospecies ''I. ramotubulus'' was first described in 1997 by Karl Hirsch, Allen Kihm and Darla Zelenitsky. Description ''I. ramotubulus'' is known from over 200 eggshell fragments which may represent a single disintegrated egg. When complete, the egg is estimated to have been long and , making it significantly larger than the next largest known Eocene bird egg in North America, which measured only 6.4 x 8.9 cm. The eggshell is 1.27–1.43 mm thick and consists of two structural layers, unlike most modern ratite eggs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oogenus
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] |
Early Eocene
In the geologic timescale the Ypresian is the oldest age or lowest stratigraphic stage of the Eocene. It spans the time between , is preceded by the Thanetian Age (part of the Paleocene) and is followed by the Eocene Lutetian Age. The Ypresian is consistent with the lower Eocene. Events The Ypresian Age begins during the throes of the Paleocene–Eocene Thermal Maximum (PETM). The Fur Formation in Denmark, the Messel shales in Germany, the Oise amber of France and Cambay amber of India are of this age. The Eocene Okanagan Highlands are an uplands subtropical to temperate series of lakes from the Ypresian. Stratigraphic definition The Ypresian Stage was introduced in scientific literature by Belgian geologist André Hubert Dumont in 1850. The Ypresian is named after the Flemish city of Ypres in Belgium (spelled ''Ieper'' in Dutch). The definitions of the original stage were totally different from the modern ones. The Ypresian shares its name with the Belgian Ieper Group (French: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Darla Zelenitsky
Darla K. Zelenitsky (born 1968) is a Canadian paleontologist most notable for her research on dinosaur reproductive biology and fossils. She was a part of a team that first found evidence of feathered dinosaurs in North America, and since then has co-authored over 50 different publications. Her research primarily focuses on paleobiology and paleoenvironments, with a key look on dinosaurs using extinct taxa to detect and infer the changes seen over time. Education Zelenitsky received her Bachelor of Science at the University of Manitoba, and then went on to obtain her Master of Science at the University of Calgary. She went on to complete her PhD at the University of Calgary, finishing in 2004. She has continued to work at the University of Calgary as an assistant professor in the department of geoscience. Early career In 1996, while working alongside several other well-known paleontologists including Philip J. Currie, Zelenitsky first published an analysis of dinosaur eggsh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossil Parataxa Described In 1997
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants. The totality of fossils is known as the ''fossil record''. Paleontology is the study of fossils: their age, method of formation, and evolutionary significance. Specimens are usually considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years old to 4.1 billion years old. Early edition, published online before print. The observation in the 19th century that certain fossils were associated with certain rock strata led to the recognition of a geological timescale and the relative ages of different fossils. The development of radiometric dating techniques in the early 20th century allowed scientists to quantitatively measure the absolu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medioolithus
''Medioolithus'' is an oogenus of fossil egg laid by a paleognath.Kohring, R., & Hirsch, K. F. (1996). "Crocodilian and avian eggshells from the Middle Eocene of the Geiseltal, Eastern Germany." ''Journal of Vertebrate Paleontology'', 16(1), 67-80. Description ''Medioolithus'' is known several eggshell fragments, and one complete, spherical egg. ''M. geiseltalensis'' is very similar to modern ratite eggs, for example those of ostriches, rheas, and cassowaries. At in diameter, however, it is smaller than the eggs of any of these birds, being more similar in size to the egg of a kiwi Kiwi most commonly refers to: * Kiwi (bird), a flightless bird native to New Zealand * Kiwi (nickname), a nickname for New Zealanders * Kiwifruit, an edible berry * Kiwi dollar or New Zealand dollar, a unit of currency Kiwi or KIWI may also refe .... References {{Reflist Egg fossils Fossil parataxa described in 1996 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aepyornis
''Aepyornis'' is a genus of aepyornithid, one of three genera of ratite birds endemic to Madagascar until their extinction sometime around 1000 CE. The species ''A. maximus'' weighed up to , and until recently was regarded as the largest known bird of all time. However, in 2018 the largest aepyornithid specimens, weighing up to , were moved to the related genus ''Vorombe''. Its closest living relative is the New Zealand kiwi. Taxonomy Brodkorb (1963) listed four species of ''Aepyornis'' as valid: ''A. hildebrandti'', ''A. gracilis'', ''A. medius'' and ''A. maximus''. However, Hume and Walters (2012) listed only one species, ''A. maximus''. Most recently, Hansford and Turvey (2018) recognized only ''A. hildebrandti'' and ''A. maximus''. * ?''A. grandidieri'' Rowley 1867 nomen dubium * ''Aepyornis hildebrandti'' Burckhardt, 1893 (Hildebrandt's elephant-bird) ** ''Aepyornis gracilis'' Monnier, 1913 ** ''Aepyornis lentus'' Milne-Edwards & Grandidier, 1894 ** ?''Aepyornis minimus' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aepyornithid
Elephant birds are members of the extinct ratite family Aepyornithidae, made up of flightless birds that once lived on the island of Madagascar. They are thought to have become extinct around 1000-1200 CE, probably as a result of human activity. Elephant birds comprised the genera '' Mullerornis'', ''Vorombe'' and ''Aepyornis''. While they were in close geographical proximity to the ostrich, their closest living relatives are kiwi (found only in New Zealand), suggesting that ratites did not diversify by vicariance during the breakup of Gondwana but instead evolved from ancestors that dispersed more recently by flying. In September 2018, scientists determined that ''Vorombe titan'' reached weights of and stood tall, making it the world's largest and heaviest bird, slightly larger than the much older ''Dromornis stirtoni''. Other members of the family were also very large, exhibiting the phenomenon of island gigantism. Description Elephant birds have been extinct since ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ratite
A ratite () is any of a diverse group of flightless, large, long-necked, and long-legged birds of the infraclass Palaeognathae. Kiwi, the exception, are much smaller and shorter-legged and are the only nocturnal extant ratites. The systematics of and relationships within the paleognath clade have been in flux. Previously, all the flightless members had been assigned to the order Struthioniformes, which is more recently regarded as containing only the ostrich. The modern bird superorder Palaeognathae consists of ratites and the flighted Neotropic tinamous (compare to Neognathae). Unlike other flightless birds, the ratites have no keel on their sternum — hence the name, from the Latin ''ratis'' (raft, a vessel which has no keel - in contradistinction to extant flighted birds with a keel). Without this to anchor their wing muscles, they could not have flown even if they developed suitable wings. Ratites are a paraphyletic group; tinamous fall within them, and are the sister gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allen Kihm
Allen, Allen's or Allens may refer to: Buildings * Allen Arena, an indoor arena at Lipscomb University in Nashville, Tennessee * Allen Center, a skyscraper complex in downtown Houston, Texas * Allen Fieldhouse, an indoor sports arena on the University of Kansas campus in Lawrence * Allen House (other) * Allen Power Plant (other) Businesses *Allen (brand), an American tool company *Allen's, an Australian brand of confectionery *Allens (law firm), an Australian law firm formerly known as Allens Arthur Robinson *Allen's (restaurant), a former hamburger joint and nightclub in Athens, Georgia, United States * Allen & Company LLC, a small, privately held investment bank *Allens of Mayfair, a butcher shop in London from 1830 to 2015 *Allens Boots, a retail store in Austin, Texas * Allens, Inc., a brand of canned vegetables based in Arkansas, US, now owned by Del Monte Foods *Allen's department store, a.k.a. Allen's, George Allen, Inc., Philadelphia, USA People * Alle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1997 In Paleontology
Plants Cycadophytes Cycadophyte research *Hopkins and Johnson briefly report the first occurrence of cycad leaves from the Eocene Okanagan Highlands Klondike Mountain Formation which will later be identified to the family Zamiaceae. Angiosperms Fungi newly named Arthropoda Insects Plesiosaurs Newly Named Plesiosaurs Archosauromorphs Pterosaurs Newly Named Pterosaurs Non-avian dinosauromorphs * Paleontologist Karen Chin received a coprolite that was excavated during 1995 from strata dating back to the Maastrichtian in Saskatchewan, Canada. The specimen was about 17 inches (44 cm) long and contained fragments of bone. Due to its size, contents and age, the coprolite was believed to have been the remains of ''Tyrannosaurus rex'' feces. This discovery was announced in a 1998 paper published in the journal ''Nature''. * A Saharan expedition under the leadership of Paul Sereno yielded fruit when a team member stumbled on the bones and skull of '' Nigersa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karl Hirsch
Karl T. Hirsch (born October 17, 1970 in Phoenix, Arizona) is an American film director and producer. He retired from filmmaking in 2015. Awards *''Audience Favourite'' at the Victoria Independent Film & Video Festival (1998, won for ''Green'') *''Breakthrough Award'' at the Newport Beach Film Festival (1998, won for ''Green'') *''Best in the 'Film is a Four Letter Word' Series'' at the Valleyfest Film Festival (1999, won for ''Green'') *''Best Arizona Filmmaker'' at the Phoenix Film Festival (2001, won for ''Green'' and ''Karl's in a Coma'') *''Festival Director's Award'' at Method Fest Independent Film Festival (2005, for ''Clown'') Filmography Films *''Green'' (1998) *''Killer Bud'' (2001) *''Scarecrow'' (2002) *''Starkweather'' (2004) *''The Third Wish'' (2005) *''Officer Down'' (2005) *''Comedy Hell'' (2006) *''Aces'' (2006) *''Fist of the Warrior'' (2007) *''Frame of Mind'' (2009) *''Jill and Jac'' (2010) *''Making Change'' (2012) *''For the Love of Money'' (2012) *''Kil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
