Table 1. Sample used in this study.

Case #	Family	Genus	Species	Subspecies	Continent	Country	State/Province	County/Dist (:Island)	<1950 N	.≥1950 N
1	Cricetidae	Abrothrix	longipilis	apta	SA	Chile	Los Lagos	Llanquihue	17	17
2	Cricetidae	Abrothrix	olivaceus	brachiotis	SA	Chile	Aisen	Aisen	26	25
3	Cricetidae	Abrothrix	olivaceus	brachiotis	SA	Chile	Los Lagos	Llanquihue	57	17
4	Cricetidae	Abrothrix	olivaceus	pencanus	SA	Chile	La Araucania	Malleco	17	30
5	Cricetidae	Abrothrix	sanborni		SA	Chile	Los Lagos	Chiloe	19	10
6	Cricetidae	Akodon	xanthorhinus	xanthorhinus	SA	Chile	Magallanes	Magallanes	54	23
7	Cricetidae	Lemmus	trimucronatus	nigripes	NA	USA	Alaska	Aleutians:St. George I.	29	23
8	Cricetidae	Microtus	mexicanus	mexicanus	SA	Mexico	Mexico	Toluca	20	18
9	Cricetidae	Microtus	pennsylvanicus	pennsylvanicus	NA	USA	Illinois	Cook	22	31
10	Cricetidae	Microtus	pennsylvanicus	pennsylvanicus	NA	USA	Wisconsin	Dodge	24	15
11	Cricetidae	Peromyscus	leucopus	noveboracensis	NA	USA	Illinois	Lake	54	45
12	Cricetidae	Peromyscus	maniculatus	anacapae	NA	USA	California	Ventura:Anacapa I.	39	58
13	Cricetidae	Peromyscus	maniculatus	blandus	NA	USA	New Mexico	Otero	16	14
14	Cricetidae	Peromyscus	maniculatus	elusus	NA	USA	California	Ventura:S. Barbara I.	29	23
15	Cricetidae	Peromyscus	maniculatus	nubiterrae	NA	USA	Kentucky	Harlan	18	18
16	Cricetidae	Peromyscus	maniculatus	santacruzae	NA	USA	California	Ventura:Santa Cruz I.	19	17
17	Geomyidae	Thomomys	umbrinus	umbrinus	SA	Mexico	Mexico	Toluca	13	14
18	Heteromyidae	Chaetodipus	fallax	fallax	NA	USA	California	San Diego	17	25
19	Heteromyidae	Dipodomys	merriami	merriami	NA	USA	Arizona	Yuma	36	38
20	Muridae	Lophuromys	flavopunctatus	zena	AFR	Kenya	Central	Kiambu	24	17
21	Muridae	Oligoryzomys	longicaudatus	philippii	SA	Chile	Aisen	Aisen	21	14
22	Muridae	Phyllotis	xanthopygus	chilensis	SA	Peru	Arequipa	Arequipa	12	12
23	Muridae	Phyllotis	xanthopygus	chilensis	SA	Peru	Arequipa	Caylloma	23	16
24	Muridae	Praomys	jacksoni		AFR	Kenya	Central	Kiambu	23	16
25	Muridae	Rattus	tanezumi	mindanensis	ASIA	Philippines	Negros I.	Negros Oriental	33	26
26	Sciuridae	Sciurus	carolinensis	pennsylvanicus	NA	USA	Illinois	Cook	13	19
27	Sciuridae	Tamias	striatus	griseus	NA	USA	Illinois	Lake	19	12
28	Spalacidae	Tachyoryctes	splendens	naivashae	AFR	Kenya	Rift Valley	Nakuru	10	8
								Totals	693	609