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Topic: Oligokyphus


In the News (Tue 29 Dec 09)

  
  Oligokyphus - Wikipedia, the free encyclopedia
Oligokyphus was an advanced herbivorous cynodont of the late Triassic to late Jurassic periods.
Originally considered to be an early mammal, it is now classified as a non-mammalian therapsid because Oligokyphus does not have the mammalian jaw attachments and it retains a vestigial joint between the quadrate bone and the squamosal bone in the skull.
This page was last modified 14:53, 27 August 2006.
en.wikipedia.org /wiki/Oligokyphus   (87 words)

  
 Eucynodontia - Wikipedia, the free encyclopedia
Most representatives are known from the Lower Jurassic, when this family had a more or less worldwide distribution.
Fragmentary tritylodont remains have also been recovered from Antarctica.) The most recent undisputed material comes from Siberia and Japan.
The demise of the tritylodonts may be connected with the rise of multituberculate mammals, especially with regards to the Northern Hemisphere.
en.wikipedia.org /wiki/Eucynodont   (1403 words)

  
 JURASSIC CYNODONTS; Tritylodontidae, an internet directory
Oligokyphus is one of the most completely known genera.
yunnanense, (though not according to a study by Sun and Cui, 1986), as is also possibly the case with Oligokyphus sinensis, represented by a partial dentary, the lower postcanines of which have a different number of cusps in comparison to confirmed members of that genus.
From the same source: "The broad distribution of Oligokyphus indicates that there were no major barriers separating the terrestrial vertebrate faunas of Europe, North America, and China." This conclusion is supported by finds of other small vertebrates from Yunnan, including mammals and proper reptiles.
home.arcor.de /ktdykes/jtherap.htm   (9580 words)

  
 Marooned in the past by Peter Billingham
His palaeontological curiosity almost cost him dear when three or four Oligokyphus hove on the scene and proceeded to chase the Pterodactyls one of which took up its station on the rock alongside and began to consider him as a substitute meal.
The small Oligokyphus had all been chased away and two of them were eyeing him with more than a passing interest.
He again used his laser but the smell of roasting meat it produced drew two of the giant carnivores and before he knew what was happening he was fighting for his life against a growing hoard of hungry reptiles.
www.pabillingham.freeserve.co.uk /StyPast.html   (1566 words)

  
 Tritylodontidae - Wikipedia, the free encyclopedia
It was thought to be one of the very earliest mammals.
For example, one of the tritylodontids, a Oligokyphus, could be compared to a weasel or mink, with a long, slim body and tail.
Its legs had evolved directly beneath the body, as they have in mammals.
en.wikipedia.org /wiki/Tritylodontidae   (734 words)

  
 Mellomledd   (Site not responding. Last check: 2007-11-01)
Bear in mind that both these groups were almost fully mammalian in every feature, lacking only the final changes in the jaw joint and middle ear.
Oligokyphus, Kayentatherium (early Jurassic, 208 Ma) -- These are tritylodontids, an advanced cynodont group.
Thought to have diverged from the trithelodontids during that gap in the late Triassic.
www.home.no /phscs/evolusjon/mellomledd.html   (3167 words)

  
 Tritylodontidae
Tritylodon, after which the group is named, was first discovered in the Upper Triassic rocks of South Africa in the late 19th century, and was for decades considered to be a very early mammal.
Its forelegs, as well as its hind-legs, were placed directly beneath the body, as they are in mammals (in contrast many more earlier and primitive therapsids, like the dicynodonts and the dinocephalians, had sprawling forelimbs).
The proximal fragment of the femur resembles Bienotherium (differeing in that the trochantor major is not sharply seperated from the condyle) but is very different from Oligokyphus.
www.kheper.net /evolution/therapsida/Tritylodontidae.html   (1907 words)

  
 page-6
Images of irises, chrysanthemums, lilies, sunflowers, and 26 other blossoms are arranged artfully in attractive vases, ready for the artist's crayon or brush.
Detailed, ready-to-color illustrations of nothosaur, titanosuchus, oligokyphus and 42 other formidable creatures that predated dinosaurs.
All portrayed in realistic habitats and identified by fact-filled captions.
www.doverdirect.com /by-subject-6-6f-6f1-page-6.html   (308 words)

  
 The Annual Symposium of Vertebrate Palaeontology and Comparative Anatomy
Remains of the tritylodontid Oligokyphus were described from the Rhaetic bonebeds of Baden-Wrttemberg, southern Germany, by Hennig (1922).
The presence of eleven cusps on complete upper molars are an apomorphy of Oligokyphus.
triserialis that may help resolve the relationships of Oligokyphus worldwide are identified, and the material is compared with O.
www.svpca.org /years/2004_leicester/abstracts/svpca-papers.htm   (4760 words)

  
 Part 6: The Gulf Between Reptiles and Mammals
Synapsids from the Late Triassic such as Oligokyphus major had strikingly mammalian skeletons.
Their features are so mammal-like that there has been debate as to whether they should be regarded as reptiles or mammals.
Synapsids de Dernier Triassic comme Oligokyphus principal avaient de façon saisissante mammalian des squelettes.
www.finalkeno.freesurf.fr /temp/tj/osarsif/ce06.htm   (7865 words)

  
 Triassic Eucynodonts
The demise of the tritylodontids may be connected with the rise of multituberculate mammals, especially with regards to the northern hemisphere.
Tritylodon, Bienotherium, Bienotheroides, Bocatherium, Dianzhongia, Dinnebitodon, Kayentatherium, Lufengia, Oligokyphus, Stereognathus, Xenocretosuchus, Yunnanodon
I follow a rather loose definition of Mammalia.
home.arcor.de /ktdykes/trias.htm   (1474 words)

  
 †Tritylodontidae
magnum Chow, 1962 ?- †Chalepotherium plieningeri Ameghino, 1903 [Oligokyphus??] -- †Diazhongia longirostrata Cui, 1981 [= Lufengia delicata Chow and Hu, 1959??] -- †Dinnebitodon amarali Sues, 1986a -- †Kayentatherium wellesi (Kermack, 1982) [Nearctylodon broomi Lewis, 1986; Kayentotherium] --o †Lufengia Chow and Hu, 1959
delicata Chow and Hu, 1959 [= Diazhongia longirostrata Cui, 1981??] --o †Oligokyphus Hennig, 1922 [Chalepotherium, Mucrotherium von Huene, 1933, Uniserium von Huene, 1933]
Luo, Z.-X. and Sun, A.-L., 1993: Oligokyphus (Cynodontia: Tritylodontidae) from the Lower Lufeng Formation (Lower Jurassic) of Yunnan, China.
www.fmnh.helsinki.fi /users/haaramo/Metazoa/Deuterostoma/Chordata/Synapsida/Theriodontia/Tritylodontidae.htm   (404 words)

  
 Incredible book critiquing materialism and evolution
After this, a gap is known from about 30 million years, with only one mammalian fossil known from that time.
However, after this gap, reptilian-like mammals appear (for example Oligokyphus, Adelobasileus, Kayentatherium, Diarthrognathus, Sinoconodon, Eozostrodon and Morganucodon).
But just as there once was a gap between fish and amphibians, I see no reason why more findings will close this gap with more transitional animals.
www.ld4all.com /forum/viewtopic.php?p=139296   (12692 words)

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