Hi rockondon, and welcome to the fray.
It has a jaw with reptillian teeth, absent beak, a long bony tail, a neck that attaches to skull from rear (like dinosaurs) instead of from below (like birds), a flat breastbone, stomach ribs, reptilian vertebrae, unfused wristbones (birds have fused ones), unfused ankle bones (ditto), sacrum occupies only 6 vertebrae (half the minimum for birds), and (my personal favorite) three bony claws jutting out from the middle of each wing. These are reptillian characteristics, not bird ones.
And then there are the list of bird characteristics, such as feathers and wings, characteristics that become more derived in modern birds, and that show archy was intermediate between reptiles and modern birds.
Unfortunately OutcastiNator was banned after this thread was started on 03-29-2005 - 5 years ago today.
Enjoy.
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