Table 2. Linear measurements for each Endothiodon cf. bathystoma specimen.

Each variable for the three specimens was measured at five different loci of each SC. Abbreviations: SE, standard error, σ, variance, conf. int. confidence interval, LDASC Lumen diameter of the anterior semicircular canal, LDPSC Lumen diameter of the posterior semicircular canal, LDHSC Lumen diameter of the horizontal semicircular canal.

	LDASC	LDPSC	LDHSC
MTA-ACL-001	0.75	0.42	0.57
	0.80	0.35	0.58
	0.80	0.40	1.02
	0.84	0.42	0.88
	0.76	0.39	0.66
Mean	0.79	0.40	0.74
σ	0.04	0.03	0.20
St error	0.02	0.01	0.09
Lower bound 95% conf. int.	0.75	0.36	0.49
Upper bound 95% conf. int.	0.83	0.43	0.99
MTA-ACL-002	0.69	0.43	0.76
	0.81	0.38	0.77
	0.94	0.44	0.73
	0.59	0.44	0.88
	0.53	0.42	0.66
Mean	0.71	0.42	0.76
σ	0.17	0.02	0.08
St error	0.07	0.01	0.04
Lower bound 95% conf. int.	0.51	0.39	0.66
Upper bound 95% conf. int.	0.92	0.45	0.86
MTA-ACL-003	0.61	0.41	0.41
	0.68	0.36	0.62
	0.64	0.40	0.47
	0.70	0.42	0.77
	0.71	0.41	0.51
Mean	0.67	0.40	0.56
σ	0.04	0.02	0.14
St error	0.02	0.01	0.06
Lower bound 95% conf. int.	0.62	0.37	0.38
Upper bound 95% conf. int.	0.72	0.43	0.73