Task: Text Simplification
Input (English): all members of this genus were once considered part of the same species , calomyscus bailwardi , but they are now referred to as separate species due to major differences in chromosome number , skull measurements , and other features.
Output (English): all members of this genus were once thought to be part of the same species , calomyscus bailwardi , but they are now referred to as separate species because of major differences in chromosome number , skull measurements , and other features.