Table 9. Genera represented by multiple species, with the position of each OTU cluster on each principal component axis and a list of the important characters for each axis (Table 4) and the magnitude (large or small observed values) for the measurements for the most diagnostic characters. For each PCA axis, OTUs that plot HIGH (positive values on scatter plots) represent specimens with some combination of characters that have large measured values for the characters with the most positive loading coefficients (Table 4, highlighted blue) and or small measured values for the characters with the most negative loading coefficients (Table 4, highlighted red). For each PCA axis, OTUs that plot LOW (negative values on scatter plots) represent specimens with some combination of characters that have large measured values for the characters with the most negative loading coefficients (Table 4, highlighted red) and or small measured values for the characters with the most positive loading coefficients (Table 4, highlighted blue).

					Measured values
	Genus	Axis	Figure	Position	Large	–	small
	Alternifenestella
		PCA-1	16.1	mixed		–
		PCA-2	16.2	HIGH	AAB	–	AD, DW
		PCA-3	16.1-2	LOW	FL, NS, FW	–	ND, AAB, AD
		PCA-4	13.5	centered		–
		PCA-5	13.5	HIGH	AD, ALB	–	DW, AAB, ND
	Apertostella
		PCA-1	14.5	mixed		–
		PCA-2	14.6	LOW	DW, AD	–	AAB
		PCA-3	14.5-6	mixed		–
		PCA-4	13.4	mostly centered		–
		PCA-5	13.4	centered		–
	Archimedes					–
		PCA-1	14.3	LOW		–	all characters
		PCA-2	14.4	LOW	DW, AD	–	AAB
		PCA-3	14.3-4	centered		–
		PCA-4	13.3	centered		–
		PCA-5	13.3	centered		–
	Cubifenestella					–
		PCA-1	14.5	very HIGH	all characters	–
		PCA-2	16.2	centered		–
		PCA-3	16.1-2	centered		–
		PCA-4	13.5	HIGH	AD, ND, NS	–	BW, DW
		PCA-5	13.5	centered		–
	Fenestella
		PCA-1	11.5	LOW		–	all characters
		PCA-2	11.6	LOW	DW, AD	–	AAB
		PCA-3	11.5-6	centered		–
		PCA-4	13.1	centered		–
		PCA-5	13.1	centered		–
	Hemitrypa
		PCA-1	14.1	centered to LOW		–	all characters
		PCA-2	14.2	centered (low pca-3)		–
				LOW (high pca-3)	DW, AD	–	AAB
		PCA-3	14.1-2	centered (mid pca-2)		–
				HIGH (low pca-2)	AD, AAB, ND	–	FL, FW, NS
		PCA-4	13.2	mostly centered		–
		PCA-5	13.2	mostly centered		–
	Laxifenestella
		PCA-1	11.3	HIGH	all characters	–
		PCA-2	11.4	centered		–
		PCA-3	11.3-4	centered		–
		PCA-4	13.1	centered		–
		PCA-5	13.1	LOW	DW, AAB, ND	–	AD, ALB
	Minilya
		PCA-1	16.1	HIGH	all characters	–
		PCA-2	16.2	HIGH	AAB	–	DW, AD
		PCA-3	16.1-2	HIGH	AD, AAB, ND	–	FL, FW, NS
		PCA-4	13.5	mixed		–
		PCA-5	13.5	mixed		–
	Rectifenestella
		PCA-1	11.1	LOW		–	all characters
		PCA-2	11.2	HIGH	AAB	–	DW, AD
		PCA-3	11.1-2	HIGH	AD, AAB, ND	–	FL, FW, NS
		PCA-4	13.1	centered		–
		PCA-5	13.1	centered		–
	Spinofenestella
		PCA-1	16.1	LOW		–	all characters
		PCA-2	16.2	HIGH	AAB	–	DW, AD
		PCA-3	16.1-2	LOW	FL, FW, NS	–	AD, AAB, ND
		PCA-4	6.5	centered		–
		PCA-5	13.5	HIGH	AD, ALB	–	DW, AAB, ND