[Swordmaker]

The article is incorrect in one area. It states that Dakota weighed 3 1/2 tons. . . but the National Geographic site says it was 35 tons, one order of magnitude greater.

[Renfield]

If the image shown above is accurate, the creature could not have weighed 35 tons. The 3 1/2 ton figure is probably the correct one.

[VirginiaConstitutionalist]

The article is incorrect in one area. It states that Dakota weighed 3 1/2 tons. . . but the National Geographic site says it was 35 tons, one order of magnitude greater.

I think the reporter just didn't see the decimal point or someone had a typo somewhere down the line.