original: 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.
simplifications: All members of this group were once part of the Calomyscus bailwardi, but now they are considered seperate due to the difference in chromosomes, skull measurements, and other features. All members of this genus used to be the same species, Calomyscus bailwardi. Today they are a separate species because of the difference  in chromosome number, skull measurements, and other features. Members with this gene were considered Calomyscus bailwardi, but now seen as a separate species by differences in chromosomes, skull measurements and other features. All members of this genus were once considered part of the Calomyscus bailwardi family. They are now separate species due to major differences in chromosome number, skull measurements, and other features. All genus members were once considered part of the same species, Calomyscus bailwardi. However, they are now considered separate species. This is due to big differences in chromosome number, skull measurements, and other features. All members of this genus were once part of the same species, Calomyscus bailwardi. Now they are a separate species. This is because of big differences in chromosome number, skull measurements, and other features. All members of this genus were once thought of as part of the same species. That species was Calomyscus bailwardi. They are now referred to as separate species. This change was because of major differences in chromosome number, skull measurements, and other features. All the creatures of the genus used to be seen as the same species, Calomyscus Bailwardi. Now they're named as different species since they have big differences in things like size or chromosomes. They were all apart of the Calomyscus bailwardi species. Now they are different species due to differences in chromosome number, skull measurements, and other features. All members of this class were once part of the same family, Calomyscus bailwardi, but they are now known as separate class due to major differences in chromosome number, skull measurements, and other features.