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Topic: Euarchonta

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	Euarchonta - Wikipedia, the free encyclopedia
		The Euarchonta are a superorder of mammals containing four orders: the Dermoptera or colugos, the Scandentia or treeshrews, the extinct Plesiadapiformes, and the Primates.
		The term "Euarchonta" first appeared in the general scientific literature in 1999, when molecular evidence suggested that the morphology-based Archonta be trimmed down to exclude Chiroptera.
		Some interpretations of the molecular data link Primates and Dermoptera in a clade known as Primatomorpha, which is the sister of Scandentia.
	en.wikipedia.org /wiki/Euarchonta (163 words)

	Paleorama.com
		A group of small, nocturnal and arboreal, insect-eating mammals called the Euarchonta begins a speciation that will lead to the primates, tree shrew and flying lemur orders.
		The Primatomorpha is a subdivision of Euarchonta that includes the primates and the proto-primate Plesiadapiformes.
		Plesiadapis still had claws and the eyes located on each side of the head, because of that they were faster on the ground than on the top of the trees, but they begin to spend long times on lower branches of trees, feeding on fruits and leafs.
	www.paleorama.com /timelines/hEvolution.html (2620 words)

	Molecular Systematics
		The recently proposed affiliation between cetaceans and hippopotamuses is an example of a molecular hypothesis that has inspired fruitful reevaluation of the morphological traits supporting a cetacean-mesonychid relationship.
		Determining the sister-group relationships of Primates, Dermoptera, Scandentia (Euarchonta), Rodentia and Lagomorpha (Glires) are the two initial priorities of this project.
		Archonta is maintained in most morphological and paleontological studies of eutherian relationships, although the sister group relationship of Primates and Scandentia is disputed.
	www.bio.umass.edu /biology/adkins/Systematics.html (2774 words)

	Reproductive Biology and Endocrinology \| Full text \| Comparative aspects of trophoblast development and placentation
		He argued that this was indicative of convergent evolution of hemochorial placentation, whereas the epitheliochorial type was part of the primitive eutherian condition.
		On the grounds of parsimony, one might argue that the widespread occurrence of hemochorial placentation in Euarchonta reflects their common ancestry and follow Wislocki [10] in regarding the epitheliochorial placenta of strepsirhine primates as a derived state.
		Tree shrews have many conserved characters and it is possible that endotheliochorial placentation is one of these rather than being derived from a hemochorial type.
	www.rbej.com /content/2/1/46 (6198 words)

	Comment on "Grasping Primate Origins" -- Kirk et al. 300 (5620): 741 -- Science (Site not responding. Last check: 2007-10-20)
		extant euarchonta (8) favor the hypothesis that primates and
		Euarchonta is a putative monophyletic group that includes primates, scandentians, and dermopterans (19).
		Szalay, Evolutionary History of the Marsupials and an Analysis of Osteological Characters (Cambridge Univ. Press, New York, 1994).
	www.sciencemag.org /cgi/content/full/300/5620/741b (879 words)

	Rodent Phylogeny and a Timescale for the Evolution of Glires: Evidence from an Extensive Taxon Sampling Using Three ...
		Laurasiatheria and [Glires + Euarchonta] ("L/E + G"), and the
		the glires, and the Laurasiatheria versus Euarchonta + Glires
		Note that the age of the placental radiation has not been estimated here because no quartet fitted a two-rate constrained model for each of the three genes.
	mbe.oxfordjournals.org /cgi/content/full/19/7/1053 (6591 words)

	Doug Boyer
		I am interested in trying to incorporate use of GIS for analyses of paleobiogeographic questions.
		Plesiadapiformes - What is the primitive morphotype for Euarchonta?
		What sequence of character changes lead from a primitive eutherian mammal to a form represented by the morphotypic euarchontans and what does this imply about the ecological niche for which euarchontans were originally specialized?
	gibbon.anat.sunysb.edu /Department/students/dboyer.html (893 words)

	Geneimprint : Features : Divergent Evolution in M6P/IGF2R Imprinting: Implications for Cloning and Cancer
		We report herein that M6P/IGF2R is imprinted in Artiodactyla, as it is in Rodentia and Marsupialia, but that it is not imprinted in Scandentia, Dermoptera and Primates, including ringtail lemurs and humans.
		These results are most parsimonious with a single ancestral origin of M6P/IGF2R imprinting followed by a lineage-specific disappearance of M6P/IGF2R imprinting in Euarchonta.
		The absence of M6P/IGF2R imprinting in extant primates, due to its disappearance from the primate lineage over 75 million years ago, demonstrates that imprinting at this locus does not predispose to human disease.
	www.geneimprint.com /site/features/11532981 (250 words)

	Divergent evolution in M6P/IGF2R imprinting from the Jurassic to the Quaternary -- Killian et al. 10 (17): 1721 -- ...
		the Euarchonta clade, a taxonomic grouping that includes Scandentia
		a conservative estimate for the divergence of Euarchonta.
		Euarchonta such as the tree shrew and ringtail lemur, however,
	hmg.oxfordjournals.org /cgi/content/full/10/17/1721 (4817 words)

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