Detailed Instructions: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Problem:" Edmontosaurus " was named from a fossil found in the Horseshoe Canyon Formation , in Alberta , Canada .
Solution:
The first fossils named " Edmontosaurus " were discovered in southern Alberta ( named after Edmonton , the capital city ) , in the Horseshoe Canyon Formation ( formerly called the lower Edmonton Formation ) .