The upcoming discussion will update you about the difference between archaeopteryx characters and phylogenetic relationship.
Difference # Archaeopteryx Characters:
1. Presence of feather.
2. Hallux (great toes) opposable.
3. Bones non-pneumatic
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4. Large orbit with sclerotic rings.
5. Antorbital foramen.
6. Post-dentary fenestra.
7. Teeth socketed.
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8. Vertebrae amphicoelous.
9. Cervical vertebrae six and bear ribs.
10. 19-20 trunk vertebrae; 6 sacral vertebrae, only 5 fused to form synsacrum.
11. Free caudal vertebrae 20, no pygostyle.
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12. Sternum lacks a keel.
13. Abdominal ribs.
14. Clavicles fused to form a furcula.
15. None of the wing bones fused.
16. Digits of the manus reduced to 3 with external and functional claws.
Difference # Phylogenetic Relationship:
1. Avian trait.
2. Present in many reptiles and modern birds.
3. Bones pneumatic in fliers.
4. Found in modern birds and the codont reptiles like Euparkeria.
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5. Archosaurian feature.
6. Archosaurian feature.
7. Thecodont feature.
8. Non-avian feature.
9. Reptilian character. Modern birds have 13-25 cervical vertebrae and none bears rib.
10. Reptilian feature; more vertebrae fused in modem birds.
11. Primitive feature, modern flying birds bear a pygostyle.
12. Found in Ratite (flightless birds).
13. Reptilian character, present in sphenodon and crocodiles.
14. Avian character.
15. Reptilian feature; modern birds have fused carpometacorpus.
16. Common in bipedal Mesozoic reptiles; vestigeal external claws present in some modern birds, e.g. Hoatzin of the Amazon forest.