The archeological evidence is good too:
http://www.catholic.com/thisrock/1991/9110fea1.asp
First one:
IN 1968 one of the greatest archaeological finds occurred. The description is given in "Anthropological Observations on the Skeletal Remains from Giv?at ha-Mivtar," written by N. Haas of the Department of Anatomy at
In an ossuary from burial caves at Giv?at ha-Mivtar in were found the remains of a man, aged 24-28, who had been crucified and died near the year A.D. 70. Though thousands upon thousands had been crucified in antiquity, this was the first time that archaeologists had discovered actual physical remains of a victim. The bones in the ossuary showed the man?s legs had been broken deliberately after the arms and legs had been nailed to a cross of olivewood . The single nail that had pierced the feet had penetrated the ankle bones and could not be extracted before burial.
"The whole of our interpretation concerning the position of the body on the cross may be described briefly as follows: The feet were joined almost parallel, both transfixed by the same nail at the heels, with the legs adjacent; the knees were doubled, the right one overlapping the left; the trunk was contorted; the upper limbs were stretched out, each stabbed by a nail in the forearm." (The emphasis is my own. It should also be pointed out that the article has photographs of the ossuary and of the bones .)
Another archeological find:
The Palatine crucifix is the oldest depiction of a crucifixion. It was uncovered by archaeologists more than a century ago on the Palatine Hill in . It is second-century graffiti scratched into a wall that was part of the imperial palace complex. It includes a caption--not by a Christian, but by someone taunting and deriding Christians and the crucifixions they underwent. It shows crude stick-figures of a boy reverencing his "God," who has the head of a jackass and is up on a cross with arms spread wide and with hands nailed to the crossbeam . Here we have a Roman sketch of a Roman crucifixion, and it is in the traditional cross shape.
-ithinkisee