In 2001, the  International Committee for Coal and Organic Petrology (I.C.C.P.) modified the above nomenclature as follows (ICCP System 1994):

 

MACERAL GROUP	MACERAL  SUB-GROUP	MACERAL	MACERAL TYPE	MACERAL VARIETY
H U M I N I T E	Telohuminite	Textinite		A
				B
		Ulminite		A
				B
	Detrohuminite	Attrinite
		Densinite (1), (2), (3)
	Gelohuminite	Gelinite	Levigelinite (1), (2)
			Porigelinite
		Corpohuminite (1), (2)	Phlobaphinite
			Pseudophlobaphinite