The 1st claw of the Utahraptor was thought to be a rib--they grew 'em big in this period, from Latin for "chalk"
You can also see ... [PAR] Sarcosuchus Fossil Skull in comparison with modern crocodile-- they could ... 
what he initally thought was a fence post turned out to be a rib bone and the first 
part of a ... this Devonian fish could grow up to 33 feet long, had an armored face, 
and ..... Dunkleosteus was a large Placoderm that lived in the late Devonian 
period,... [DOC] [TLE] Phenomena - National Geographic [PAR] Jan 8, 2016 ...