Complex sentence: Due to few fossiliferous deposits and many of Appalachia's fossil formations being destroyed by the Pleistocene Ice Age, little is known about Appalachia, but a few fossil sites have given us a glimpse into this forgotten world of paleontology.
Split into simpler sentences: Due to few fossiliferous deposits and many of Appalachia's fossil formations being destroyed by the Pleistocene Ice Age, little is known about Appalachia. However, a few fossil sites have given us a glimpse into this forgotten world of paleontology.