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Embryology of chicken; 20 hours after fertilization
	- Large (114 Kb) - Scroll down to information With labels Legend: 1 proamnion 2 area opaca 3 area pellucida 4 embryonal area 5 head fold 6 neural groove 7 neural plate 8 notochord 9 Hensen's node 10 primitive streak
English name: Common chicken Scientific name: Gallus domesticus Familia: Phasianidae/Meleagridae Classis: Aves Phylum: Chordata (subphylum vertebrata) Regnum: Animalia