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The term sister group is used in phylogenetic analysis, however, only groups identified in the analysis are labeled as "sister groups".. An example is birds, whose commonly cited living sister group is the crocodiles, but that is true only when discussing extant organisms; [3] [4] when other, extinct groups are considered, the relationship between birds and crocodiles appears distant.
For example, if we consider the crown-birds (i.e. all extant birds and the rest of the family tree back to their most recent common ancestor), extinct side branches like the dodo or great auk are still descended from the most recent common ancestor of all living birds, so fall within the bird crown group. [4]
Every article on a currently accepted taxon should include an infobox—specifically, a taxobox—which gives the place of the taxon in a hierarchical classification and some basic taxonomic data. The taxobox can be generated by using the Automatic taxobox system with templates such as {{Automatic taxobox}} and {}. These taxoboxes are intended ...
Amborella trichopoda, the most basal extant angiosperm. The flowering plant family Amborellaceae, restricted to New Caledonia in the southwestern Pacific, [n 9] is a basal clade of extant angiosperms, [13] consisting of the most species, genus, family and order within the group that are sister to all other angiosperms (out of a total of about 250,000 angiosperm species).
Examples are cryptic species in the malaria vector genus of mosquito, Anopheles, the fungi causing cryptococcosis, and sister species of Bactrocera tryoni, or the Queensland fruit fly. That pest is indistinguishable from two sister species except that B. tryoni inflicts widespread, devastating damage to Australian fruit crops, but the sister ...
We're seeing double! Meet the Clements twins, Ava Marie and Leah Rose, who have been hailed as the "most beautiful twins in the world." The 8-year-old identical twins from Los Angeles have quickly ...
Gigi and Bella Hadid are causing a stir online with their joint nude photo shoot in the upcoming March issue of British Vogue. The cover of the issue marks the model sisters' first-ever dual ...
Kaley Cuoco stepped out with her sister this week, and we can't get over how much they look alike. The former "Big Bang Theory" actress has been loving life since her CBS sitcom came to an end ...