It is believed that the birds arose from a lineage of reptiles. A fossil was discovered having the size of a crow with a skull not unlike that of modern birds except that the beaklike jaws bore small bony teeth in sockets like those of reptiles. The skeleton is that if a reptile with a long bony tail, clawed fingers and abdominal ribs. There was the presence of imprint of feathers and it was the Archaeorptorex lithographica.

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APA

Frontiers, E. (2022). ZOO 313- Class Aves. Afribary. Retrieved from https://tracking.afribary.com/works/zoo-313-class-aves

MLA 8th

Frontiers, Edu "ZOO 313- Class Aves" Afribary. Afribary, 04 Jul. 2022, https://tracking.afribary.com/works/zoo-313-class-aves. Accessed 25 Dec. 2024.

MLA7

Frontiers, Edu . "ZOO 313- Class Aves". Afribary, Afribary, 04 Jul. 2022. Web. 25 Dec. 2024. < https://tracking.afribary.com/works/zoo-313-class-aves >.

Chicago

Frontiers, Edu . "ZOO 313- Class Aves" Afribary (2022). Accessed December 25, 2024. https://tracking.afribary.com/works/zoo-313-class-aves