Theropod Hollow Bones vs. Bird Evolution?

"..Several characters that typify a theropod: hollow, thin-walled bones are diagnostic of theropod dinosaurs." Well, since Archeopteryx (the earliest known reptilian-like bird) had SOLID bones... seems they're on the wrong evolutionary branch.
(Source)

'zat so? My comments interspersed below:

"...Archeopteryx is connecting link between reptiles & birds. Reptilian characters of archeopteryx are- teeth in jaw, thecodant dentition, [my note: described as AQUATIC IN NATURE, almost as if its ancestor came from a marine environment] long tail [like most archosaurs], solid bones [my note: typical of bird groups who are grounded and/or swimmers]."
Objective Zoology By S. K. Sharma

(Source)

Archeopteryx had solid bones? Then its not a theropod dinosaur.

CONVERGENT EVOLUTION CAN EXPLAIN THIS:
"...The bones of ceratosaurians, like those of all known theropods, are hollow. Known specimens of ceratosaurians show that the group began to exhibit "bird-like" features (more appropriately, birds show ceratosaurian-like ones) early on. The bones of ceratosaurians, like those of all known theropods, are HOLLOW. [...] Birds have taken this step even further, having large air-filled spaces in their bones. Ceratosaurians also had strongly curved S-shaped necks like birds do; this is a trait inherited from a distant archosaurian ancestor." (Source)

ARCHEOPTERYX HAD... SOLID BONES... Theropod dinosaurs have hollow bones.

Will the real ancestor of Archeopteryx, please, stand , up?

Feels like we're all being made to play a sorry rendition of the game show "To Tell The Truth".

The trustworthy people running today's "Science" show.

So many, many contradiction abound

Archeopteryx had SOLID BONES:
"Compsognathus is believed by many scientists to be an early elative of Archaeopteryx, often considered to be the first bird. Supporting this belief is the fact that the bone structure of Compsognathus is quite similar to that of Archaeopteryx, and the two dinosaurs were about the same size. They also lived at the same time in history, which would have made it difficult for Compsognathus to be an ancestor. It is still possible, though, that Compsognathus lived earlier than Archaeopteryx. On the other side of the argument, Compsognathus had hollow bones, like modern birds, but Archaeopteryx had solid bones."
(Source)

Archeopteryx had HOLLOW BONES:
"Archaeopteryx had a flat breastbone and ribs along the stomach, which are two skeletal features that are found in reptiles. Its flat breastbone suggests that Archaeopteryx was not a very strong flier, but flight muscles might have been supported by its thick, boomerang-shaped wishbone or perhaps attached to its sternum. Its hollow bones and light weight lead scientists to believe it was able to get off the ground fairly easily, however."
(Source)