Annakacygna
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Annakacygna is a genus of flightless marine swan from the Miocene of Japan. Named in 2022, Annakacygna displays a series of unique adaptations setting it apart from any other known swan, including a f
Mute swan with wings in a "piggyback" position
Presbyornis Enhancement
Chelychelynechen quassus
Humerus
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The humerus is a long bone in the arm that runs from the shoulder to the elbow. It connects the scapula and the two bones of the lower arm, the radius and ulna, and consists of three sections. The hum
Annakacygna
…extant flying anseriformes with a better developed scapulohumeralis caudalis muscle and initially does not resemble that of a flightless animal. Both humerus are preserved and are similar in length to those of Black swans, but with an unusually straight shaft lacking a pronounced sigmoid curve. Only in lateral…
Anatomical vs surgical neck of humerus
Greater tubercle of the right humerus
Attachments on the greater tubercle
Lesser tubercle of the right humerus