Complex sentence: The Smooth softshell turtle ("Apalone mutica") is a softshell turtle of the family Trionychidae living mainly in the Mississippi River drainage including the Ohio River and the lower Allegheny River.
Split into simpler sentences: The smooth softshell turtle ("Apalone mutica") is a softshell turtle of the family Trionychidae. It lives mainly in the Mississippi River drainage including the Ohio River and the lower Allegheny River.