Complex sentence: Fossils of omomyids are found in North America, Europe, Asia, and possibly Africa, making it one of two groups of Eocene primates with a geographic distribution spanning holarctic continents, the other being the adapids (family Adapidae).
Split into simpler sentences: Fossils of omomyids are found in North America, Europe, Asia, and possibly Africa. Omomyids are one of two groups of Eocene primates with a geographic distribution spanning holarctic continents, the other being the adapids (family Adapidae).