According to Jim (2001)

S06E09 Dino-Mite

Cheryl and Dana decide to leave Jim and Ryan in charge of the kids and baby Tanner while they head out. What starts as a fun outing quickly spirals into chaos when Jim takes the group to the museum. The day takes a turn for the worse when the Tyrannosaurus Rex display meets an unfortunate fate, leaving Jim and Ryan scrambling to manage the aftermath of their disastrous adventure.