Complex sentence: Chamberlin was a prolific taxonomist who named over 4,000 new animal species in over 400 scientific publications; specializing in arachnids and myriapods and becoming a recognized authority on both.
Split into simpler sentences: Chamberlin was a prolific taxonomist who named over 4,000 new animal species in over 400 scientific publications. He specialized in arachnids and myriapods and became a recognized authority on both.