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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.
The name Pseudosuchia was originally given to a group of superficially crocodile-like prehistoric reptiles from the Triassic period, but fell out of use in the late 20th century, especially after the name Crurotarsi was established in 1990 to label the clade (evolutionary grouping) of archosaurs encompassing most reptiles previously identified as pseudosuchians.
Taxonomic information, names, photos ScaleNet [26] Scale insects (superfamily Coccoidea) X Nomenclature, distribution, hosts, systematics, references Tropicos [27] Taxonomy, distribution, and specimen data for Missouri Botanical Garden. X Nearly 1.3 million scientific names and over 4.4 million specimen records, accumulated during the past 30 years
The full taxonomic name of a species includes the subgenus but this is often omitted in practice. The full name indicates some features of the morphology and type of host species. Sixteen subgenera are currently recognised. The avian species were discovered soon after the description of P. falciparum and a variety of generic names were created.
A name had to be found for a clade of various early-diversing Permian and Triassic reptiles no longer included in the anapsids. Olsen's term "parareptiles" was chosen to refer to this clade, although its instability within their analysis meant that Gauthier et al. (1988) were not confident enough to erect Parareptilia as a formal taxon.
In a 2012 molecular study, von Reumont et al. challenge the monophyly of Vericrustacea: they present four versions of Pancrustacea cladogram (figures 1–4), and in all four figures Remipedia is a sister group to Hexapoda, and Branchiopoda is a sister group to (Remipedia + Hexapoda). Thus, their data strongly suggest that Branchiopoda is more ...
They concluded that only three hypotheses of aetosaur relationships from previous studies were still true: that Aetosaurus is the most basal aetosaur, that Aetosauroides is the sister taxon of Stagonolepis robertsoni, and that Longosuchus and Desmatosuchus are more closely related to each other than either is to Neoaetosauroides. They also went ...
combinatio nova (comb. nov.): new combination; when a taxon has been given a new name, preserving one of the previous components; status novus (abbr. stat. nov.): new status; when a taxon has been given a new rank; homonym: names spelled identically, but, in some codes, names spelled similarly, as defined by the code