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Compsognathidae is a family of small carnivorous dinosaurs, generally conservative in form, from the Jurassic and Cretaceous Periods. Compsognathids lie at or near the origin of feathers—skin impressions are known from four genera, ''Compsognathus'', ''Sinosauropteryx'', ''Sinocalliopteryx'', and ''Juravenator''. While ''Juravenator'', ''Sinosauropteryx'', and ''Sinocalliopteryx'' show evidence of a covering of simple, primitive feathers, ''Juravenator'' and ''Compsognathus'' also show evidence of scales on the tail or hind legs. The position of the Compsognathidae within the coelurosaur group is uncertain; some hold the family as the basalmost of the coelurosaurs, while others as part of the Maniraptora.〔Gauthier JA. (1986) Saurischian monophyly and the origin of birds. pp. 1-55 ''In'' Padian, K. (ed.) The Origin of Birds and the Evolution of Flight. ''Memoirs of the California Academy of Sciences'' 8.〕〔Forster CA, Sampson SD, Chiappe LM & Krause DW (1998), The theropod ancestry of birds: new evidence from the Late Cretaceous of Madagascar. ''Science'' 279: 1915-1919〕 ==Taxonomic issues== In 2003, O.W.M. Rauhut redefined the family Coeluridae to include ''Coelurus'' (Late Jurassic, North America), ''Compsognathus'' (Late Jurassic, Europe), ''Sinosauropteryx'' (Early Cretaceous, Asia) and an unnamed ''Compsognathus''-like form (Early Cretaceous, South America; this dinosaur has since been placed in the new genus ''Mirischia''). However, this taxonomy has not been widely adopted. Sereno (2005) points out that Compsognathidae has priority of name, even if dinosaurs such as ''Coelurus'' or ''Ornitholestes'' belong in the same family as ''Compsognathus''. File:Sinocalliopteryx BW.jpg|''Sinocalliopteryx'' File:Sinosauropteryx prima.JPG|''Sinosauropteryx'' File:Compsognathus BW.jpg|''Compsognathus'' File:Huaxiagnathus-v2.jpg|''Huaxiagnathus'' 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「Compsognathidae」の詳細全文を読む スポンサード リンク
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