First Mentioned: IPTSF Text 5
It may be possible to pop plated Brontoswords.
Real World References
Its name seems to be a portmanteau of "brontosaurus" and "sword".
Its way of moving - described as "flumphing" - may refer to a monster from Dungeons and Dragons universe. But describing movement as a nonsense word is another reference to Jabberwocky especially "galumphing".