Complex sentence: Journal of Paleontology, Sept.2004 and many groups still feed upon and inadvertently redistribute fungal spores, but most research has focused on those species feeding on or in association with economically significant crops.
Split into simpler sentences: Journal of Paleontology, Sept.2004 and many groups still feed upon and inadvertently redistribute fungal spores. Most research has focused on those species feeding on or in association with economically significant crops.