Scapular orientation in theropods and basal birds, and the origin of flapping flight

• Autorzy: Senter P
• Języki publikacji: EN

Abstrakty

EN

Basal birds such as Archaeopteryx and Confuciusornis are typically portrayed as flapping fliers. However, here I show that shoulder joint orientation in these animals prevented elevation of the humerus above the dorsum, thereby preventing use of the recovery stroke, an important part of flapping flight. In members of the clade Ornithothoraces, which includes extant birds and the extinct avian clade Enantiornithes, the shoulder joint is reoriented to permit elevation of the humerus above the dorsum, permitting flapping flight. Although basal birds may have glided, flapping flight began significantly later in avian evolution than has been thought.

Słowa kluczowe

EN

bird; Archaeopteryx; Aves; flight; Theropoda; flapping flight; theropod; basal bird; paleontology

• Wydawca: -
• Czasopismo: Acta Palaeontologica Polonica
• Rocznik: 2006
• Tom: 51
• Numer: 2
• Opis fizyczny: p.305-313,fig.,ref.

Twórcy

autor

Senter P

• Lamar State College at Orange, 410 Front Street, Orange, Texas 76630, USA

Bibliografia

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