Fantastic Four (Fantastic Four Vol. 7 #17)

When construction unearths something unexpected, Susan Storm is called in - not as a super hero but an archaeologist! But when the bones she uncovers - tens of thousand of years old, dating back to the first arrival of humans in the Americas - turn out to be female... and matching her build... and wearing the shredded and decayed remains of what appears to be BLUE FABRIC constructed of unstable molecules, she must accept the fantastic: Dr. Susan Storm is going to DIE deep in Earth's prehistory... and that time is coming sooner than she might think! Also in this issue: an anniversary date for Reed and Sue! So Sue gets both inarguable evidence of her own death AND some romance. Not in that order though.