... well blew in with a mammoth ... be incorrect.<ref name=" ... formally called the Nisku Formation , while Nos. 2 ... 02-13 page=L13 </ref>
The discovery ...
... with cement casing. When that casing is fractured or otherwise poured incorrectly, ... format = PDF id= DE-FG26-04NT15455 pages=56–66 </ref><ref name ...