Archivo: Feather stages diagram

Descripción: Diagram showing the stages of feather evolution as outlined by Xu & Gou 2009. Single filament Multiple filaments joined at their base Multiple filaments joined at their base to a central filament Multiple filaments along the length of a central filament Multiple filaments arising from the edge of a membranous structure Pennaceous feather with vane of barbs and barbules and central rachis Pennaceous feather with an asymmetrical rachis Undifferentiated vane with central rachisXu, X. and Guo, Y. (2009). The origin and early evolution of feathers: insights from recent paleontological and neontological data. Vertebrata PalAsiatica 47 (4): 311-329.
Título: Feather stages diagram
Créditos: Trabajo propio
Autor(a): Matt Martyniuk
Términos de Uso: Creative Commons Attribution-Share Alike 3.0
Licencia: CC BY-SA 3.0
Enlace de Licencia: https://creativecommons.org/licenses/by-sa/3.0
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