Spina cortica and Tapetum spinosus, two new microstructures of flight feathers: description, function and

L C Straker1, M A Raposo, Márcia Attias

  • 1Setor de Ornitologia, Departamento de Vertebrados, Museu Nacional/UFRJ, Quinta da Boa Vista, São Cristóvão, 20940-040 Rio de Janeiro, Brazil. locobra@biologia.ufrj.br

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