Assertion: fossil lamprey | /r/AtLocation | early carboniferous limestones
Facets:
value: originally
type: MANNER
Source sentences:
text: The first fossil lampreys were originally found in Early Carboniferous limestones, marine sediments in North America: Mayomyzon pieckoensis and Hardistiella montanensis, from the Mississippian Mazon Creek lagerstätte and the Bear Gulch limestone sequence.