- Tytuł:
- Scapular orientation in theropods and basal birds, and the origin of flapping flight
- Autorzy:
- Senter, P
- Powiązania:
- https://bibliotekanauki.pl/articles/21712.pdf
- Data publikacji:
- 2006
- Wydawca:
- Polska Akademia Nauk. Instytut Paleobiologii PAN
- Tematy:
-
bird
Archaeopteryx
Aves
flight
Theropoda
flapping flight
theropod
basal bird
paleontology - Opis:
- 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.
- Źródło:
-
Acta Palaeontologica Polonica; 2006, 51, 2
0567-7920 - Pojawia się w:
- Acta Palaeontologica Polonica
- Dostawca treści:
- Biblioteka Nauki
Artykuł