TABLE 5. Cheek tooth dimensions (in mm) of H. fluviatilis specimens from Nebraska localities. All UNSM numbers.

	Tooth position	Specimen number	Locality	a-p length	tr width
	P4	83031	Achilles Quarry	1.33	2.06
		123328	Immense Journey	1.43	2.90
		123314	Miller Creek	1.40	2.52
	M1	90001	Egelhoff Quarry	1.02	2.05
		123314	Miller Creek	1.28	2.72
	M2	123331	Immense Journey	1.29	3.03
		123332	Immense Journey	1.28	2.34
	p3	83737	Norden Bridge Quarry	1.50	1.67
	Tooth position	Specimen number	Locality	a-p length	tri width	tal width
	m1	83029	Achilles Quarry	1.29	1.40	0.92
	m2	83032	Achilles Quarry	1.55	1.78	1.20
		83141	Lost Duckling Quarry	1.56	1.72	1.14
		90000	Egelhoff Quarry	1.54	1.72	1.24