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- Pennaceous_feather abstract "The pennaceous feather is a type of feather present in most modern birds and in some other species of maniraptoriform dinosaurs. A pennaceous feather has a stalk or quill. Its basal part, called a calamus, is embedded in the skin. The calamus is hollow and has pith formed from the dry remains of the feather pulp, and the calamus opens below by an inferior umbilicus and above by a superior umbilicus. The stalk above the calamus is a solid rachis having an umbilical groove on its underside. Pennaceous feathers have a rachis with vanes or vaxillum spreading to either side. These vanes are composed of a high number of flattened barbs, that are connected to one another with barbules.The barbules are tiny strands that criss-cross on the flattened sides of the barbs. This forms a kind of miniature velcro-like mesh that holds all the barbs together, stabilizing the vanes.Pennaceous feathers on the forelimb or wing are often attached strongly due to stresses related to flight or other activities. This strong attachment is accomplished by ligaments under the skin, which in some birds and feathered dinosaurs results in raised bumps or marks along the rear forelimb bone (ulna). These bumps, called quill knobs (ulnar papillae) are often used as an indirect indication of strongly-attached forelimb feathers in fossil species, and can also indirectly indicate the number of secondary regimes in a given specimen.Flight feathers (remiges and rectrices) are specialized types of pennaceous feathers, adapted for high loadings and often strongly asymmetric for improved flight performance.".
- Pennaceous_feather wikiPageID "1088495".
- Pennaceous_feather wikiPageLength "3240".
- Pennaceous_feather wikiPageOutDegree "18".
- Pennaceous_feather wikiPageRevisionID "678348153".
- Pennaceous_feather wikiPageWikiLink Adaptation.
- Pennaceous_feather wikiPageWikiLink Barb_(feather).
- Pennaceous_feather wikiPageWikiLink Barbule.
- Pennaceous_feather wikiPageWikiLink Bird.
- Pennaceous_feather wikiPageWikiLink Bird_flight.
- Pennaceous_feather wikiPageWikiLink Birds.
- Pennaceous_feather wikiPageWikiLink Category:Feathers.
- Pennaceous_feather wikiPageWikiLink Dinosaur.
- Pennaceous_feather wikiPageWikiLink Feather.
- Pennaceous_feather wikiPageWikiLink Feathered_dinosaur.
- Pennaceous_feather wikiPageWikiLink Feathered_dinosaurs.
- Pennaceous_feather wikiPageWikiLink Flight_feather.
- Pennaceous_feather wikiPageWikiLink Fossil.
- Pennaceous_feather wikiPageWikiLink Maniraptoriform.
- Pennaceous_feather wikiPageWikiLink Maniraptoriformes.
- Pennaceous_feather wikiPageWikiLink Rachis.
- Pennaceous_feather wikiPageWikiLink Rectrices.
- Pennaceous_feather wikiPageWikiLink Remiges.
- Pennaceous_feather wikiPageWikiLink Ulna.
- Pennaceous_feather wikiPageWikiLink Velcro.
- Pennaceous_feather wikiPageWikiLink Wing_loading.
- Pennaceous_feather wikiPageWikiLinkText "Contour".
- Pennaceous_feather wikiPageWikiLinkText "Pennaceous feather".
- Pennaceous_feather wikiPageWikiLinkText "contour feathers".
- Pennaceous_feather wikiPageWikiLinkText "pennaceous feather".
- Pennaceous_feather wikiPageWikiLinkText "pennaceous feathers".
- Pennaceous_feather wikiPageWikiLinkText "pennaceous".
- Pennaceous_feather wikiPageWikiLinkText "shaft of a bird feather".
- Pennaceous_feather wikiPageWikiLinkText "vane".
- Pennaceous_feather wikiPageWikiLinkText "vanes".
- Pennaceous_feather hasPhotoCollection Pennaceous_feather.
- Pennaceous_feather wikiPageUsesTemplate Template:Ornithology-stub.
- Pennaceous_feather subject Category:Feathers.
- Pennaceous_feather hypernym Feather.
- Pennaceous_feather type Article.
- Pennaceous_feather type Article.
- Pennaceous_feather comment "The pennaceous feather is a type of feather present in most modern birds and in some other species of maniraptoriform dinosaurs. A pennaceous feather has a stalk or quill. Its basal part, called a calamus, is embedded in the skin. The calamus is hollow and has pith formed from the dry remains of the feather pulp, and the calamus opens below by an inferior umbilicus and above by a superior umbilicus. The stalk above the calamus is a solid rachis having an umbilical groove on its underside.".
- Pennaceous_feather label "Pennaceous feather".
- Pennaceous_feather sameAs Konturfeder.
- Pennaceous_feather sameAs Plim_kontou.
- Pennaceous_feather sameAs m.044yz4.
- Pennaceous_feather sameAs Q1783398.
- Pennaceous_feather sameAs Q1783398.
- Pennaceous_feather wasDerivedFrom Pennaceous_feather?oldid=678348153.
- Pennaceous_feather isPrimaryTopicOf Pennaceous_feather.