SOLVED. Sci-Fi story about time travel starts with a Triceratops (?) head ;people travel back in time but are stuck [s]

[JoAnn]

Hello,
This book starts with a Triceratops head as a lure to get funding to make a time travel machine. But the people who go back in time are trapped.
I think they get rescued by themselves from the future.
Any help on the name of the book.

[JoAnn]

.

[Andy]

This is Bones of the Earth by Michael Swanwick Bones of the Earth

[JoAnn]

THANKS

[Andy]

Glad to help