Table 2. List of the number of replacement teeth and the functional teeth in some ceratopsians which have been studied by computed tomography.

Higher taxa	Genus	Specimen number	Left maxilla		Right maxilla		Left dentary		Right dentary
Ceratopsia	Psittacosaurus	CUGW VH104	9 FT	7 RT	9 FT	5 RT	9 FT	6 RT	10 FT	7 RT
Ceratopsia	Yinlong	IVPP V14530	13 FT	1 RT	13 FT	1 RT	14 FT	1 RT	14 FT	2 RT
Ceratopsia	Chaoyangsaurus	IGCAGS V371	9 FT	3 RT	9 FT	3 RT	9 FT	3 RT	11 FT	5 RT
Neoceratopsia	Liaoceratops	IVPP V12738	13 FT	11 RT and 1 2nd RT	13 FT	11 RT and 1 2nd RT	15 FT	13 RT and 2 2nd RT	15 FT	12 RT
Neoceratopsia	Auroraceratops	CUGW VH106	-	-	-	-	-	-	15 FT	7 RT

RT = replacement tooth; FT = functional tooth; 2nd RT = the second generation replacement tooth.