The tarsometatarsus of the Middle Eocene loon Colymbiculus udovichenkoi

Source URL: verlag.nhm-wien.ac.at

• Colymboides
• Colymbiculus
• Neogaeornis
• Pelagornithidae
• Grebe
• Polarornis
• Higher waterbird
• Anatidae
• Procellariiformes
• Ornithology
• Gaviiformes
• Loon