eutherian वाक्य

""'Horolodectes sunae " "'is a prehistoric eutherian mammal species of uncertain taxonomic position, recently discovered in Paleocene formations in northern Alberta, Canada.
Later on, the eutherian and metatherian lineages separated; the metatherians are the animals more closely related to the marsupials, while the eutherians are those more closely related to the placentals.
Later on, the eutherian and metatherian lineages separated; the metatherians are the animals more closely related to the marsupials, while the eutherians are those more closely related to the placentals.
A recent study showed that transposons contribute at least 16 % of the eutherian-specific CNSs, marking them as a major creative force in the evolution of gene regulation in mammals.
Despite strong similarities between viviparity in mammals, researchers have historically been reluctant to use the term " pregnancy " for non-mammals because of the highly developed form of viviparity in eutherians.

In eutherian ( placental ) mammals, the hemispheres are linked by the corpus callosum, a very large bundle of fornix, also join the hemispheres and these are also present in other vertebrates.
In particular, scientists have identified an early Paleocene animal named " Protungulatum donnae " as one of the first placental mammals . however it has been reclassified as a non-placental eutherian.
Although the term " pregnancy " often refers to eutherian animals, it has also been used in the titles of many international, peer-reviewed, scientific articles on fish, e . g.
By 1996, " few if any systematists would . . . doubt the eutherian affinities of xenarthrans " and molecular data have also supported the placement of Xenarthra within placentals as one of four major clades.
During meiosis male Mongolian gerbils do not interchange reciprocal alleles between pairs of homologous chromosomes ( " chiasmata " or " Crossing Over " ), a trait very rare in eutherian mammals and indeed animals in general.