Pterodactyles show no resemblance to birds in this vertebral articulation.
There is some support for this interpretation; but I have not seen any English or German Pterodactyles with only one phalange in the first toe.
Therefore there is a closer fundamental resemblance between some carnivorous Dinosaurs and Pterodactyles than might have been anticipated.
In several of the older Pterodactyles from Solenhofen the ribs of the neck vertebrae remain separated, as in a Crocodile, though still bird-like in their form, anterior position, and mode of attachment.
A jaw so entirely bird-like suggests that the digestive organs of Pterodactyles may in such toothless forms at least have been characterised by a gizzard, which is so distinctive of Birds.
Such remains may indicate Pterodactyles not inferior in size to the extinct Moas of New Zealand, but with immensely larger heads, animals far larger than birds of flight.
The Pterodactyles differ among themselves enough for the head to make a near approach to Reptiles in Dimorphodon, and to Birds in Pterodactylus.
But, it seems to me, that the special resemblance of pterodactyles to birds ends here, unless I may add the entire absence of teeth which characterises the great pterodactyles (Pteranodon) discovered by Professor Marsh.
All other known pterodactyles have teeth lodged in sockets.
If it was that of the struthious birds, how did the pterodactyles and carinate birds independently arrive at the very same divergent structure?
But it seems to me that the special resemblance of pterodactyles to birds ends here, unless I may add the entire absence of teeth which characterises the greatpterodactyles (Pteranodon) discovered by Professor Marsh.
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