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Embryology of chicken; 20 hours after fertilization
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
