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''Lycideops'' is an extinct genus of therocephalian from the Late Permian of South Africa. The type species is ''Lycideops longiceps'', named in 1931 by South African paleontologist Robert Broom. Fossils of ''Lycideops'' come from the ''Dicynodon'' Assemblage Zone of the Beaufort Group. ''Lycideops'' is a member of the family Lycideopidae. Like other lycideopids, ''Lycideops'' has a long snout. ==Phylogeny== ''Lycideops'' has been included in several phylogenetic analyses, including those of Huttenlocker (2009), Huttenlocker ''et al.'' (2011), and Sigurdsen ''et al.'' (2012). All place ''Lycideops'' within the advanced therocephalian clade Baurioidea. Huttenlocker (2009) and Huttenlocker ''et al.'' (2011) found it to group with ''Regisaurus'' and ''Scaloposaurus'' as shown in the cladogram below: |2= }} }} }} }} }} The analysis of Sigurdsen ''et al.'' (2012) came to a different result, grouping ''Lycideops'' with ''Tetracynodon'' and ''Choerosaurus''. The clade including these three genera was called Lycideopidae, and ''Lycideops'' was the most basal member of the group. Characteristics that unite ''Lycideops'' with ''Tetracynodon'' and ''Choerosaurus'' include the presence of five incisors on each side of the lower jaw (a derived characteristic given that most other eutherocephalians have four), a lacrimal bone that touches the nasal bone, and a contact between the maxilla and the vomer in the palate. Below is a cladogram from the analysis:〔 }} }} }} 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Lycideops」の詳細全文を読む スポンサード リンク
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