This page lists all the documents used to compile these tables. The symbols and numbers quoted on this page refer to any reference symbol or number in any of the microbiogeography of Colorado pages.
*	Indicates that, while the species has not been documented for the county, it may occur there (Reichard et al. 1996).
#	Indicates that, while at least one of the subspecies has not been documented for the county, two possible subspecies of the same species may occur in the county.
H	Hammerson, G. A. 1986. Amphibians and Reptiles in Colorado. Colorado Division of Wildlife, Publ. No. DOW-M-1-3-86 131 pp.
H2	Hammerson, G. A., and H. M. Smith. In press. Amphibians and reptiles in Colorado. 2nd ed.
Note 1	A specimen of this complex has been reported from Bent County, but its specific identity is unknown.
Note 2	Although S. multiplicata is expected in this county, this specimen was re-identified as Spea bombifrons by G. A. Hammerson, pers. comm., 3/1998.
Note 3	The validity of Acris crepitans records in Morgan County is uncertain.
Note 4	The validity of Acris crepitans records in Weld County is uncertain.
Note 5	Although Holbrookia maculata is expected to occur in Boulder County, this record is considered that of an introduced specimen.
Note 6	An introduced population of this taxon apparently is present in the vicinity of Hotchkiss.
Note 7	Specimens of C. picta in Mesa County represent introduced individuals.
Note 8	The specimen reported in this note probably represents an introduced individual.
UC1	University of Colorado Museum, specimen number 58796.
An1	Anonymous. 1990. Snapping turtle roams Crown Hill. 1990. Lakewood/Jefferson Sentinal Newspaper, July 19. (Article shows photo of snapping turtle. In addition, other people have mentioned seeing snapping turtles at Crown Hill Open Space.)
AA1	J. A. Applegarth, pers. comm.
KGA1	Ashton, K. G. 1998. Geographic distribution: Spea multiplicata. Herp. Rev. 29(2):108.
EB1	Bergman, E., S. Boback, B. Hill, J. Hobert, C. Montgomery, and S. P. Mackessy. 1996. Geographic distribution: Pseudacris triseriata maculata. Herp. Rev. 27(4):209.
EB2	Bergman, E., B. Hill, C. Montgomery, J. Hobert, S. Boback, and S. P. Mackessy. 1997. Geographic distribution: Chrysemys picta belli. Herp. Rev. 28(1):49.
EB3	Bergman, E., B. Hill, C. Montgomery, J. Hobert, S. Boback, and S. P. Mackessy. Geographic distribution: Tropidoclonion lineatum lineatum. Herp. Rev. 28(1):53.
EB4	Bergman, E., B. Hill, C. Montgomery, T. Childers, J. D. Manzer, J. Sifert, and S. P. Mackessy. 1998. Geographic distribution: Phrynosoma douglassii. Herp. Rev. 29(2):111.
EB5	Bergman, E., M. Bergman, T. Childers, J. D. Manzer, and S. P. Mackessy. 1998. Geographic distribution: Arizona elegans elegans. Herp. Rev. 29(4):248-249.
EB6	Bergman, E., J. D. Manzer, T. Childers, and S. P. Mackessy. 1998. Geographic distribution: Kinosternon flavescens flavescens. Herp. Rev. 29(4):247.
EB7	Bergman, E., C. Montgomery, T. Childers, J. D. Manzer, J. Sifert, B. Hill, and S. P. Mackessy. Submitted. Geographic distribution: Lampropeltis getulus holbrooki/splendida. Herp. Rev.
FB1	Blanchard, F. , T. Arneill, L. Czupryna, D. Chiszar, and H. M. Smith. 1997. Geographic distribution: Masticophis flagellum testaceus. Herp Rev. 28(1):52.
SB1	Boback, S., S. Link, C. Montgomery, J. Hobert, E. Bergman, B. Hill, and S. P. Mackessy. 1996. Geographic distribution: Chrysemys picta belli. Herp. Rev. 27(4):210.
SB2	Boback, S., S. Link, E. Bergman, B. Hill, C. Montgomery, J. Hobert, and S. P. Mackessy. 1996. Geographic distribution: Lampropeltis getula. Herp. Rev. 27(4):213.
SB3	Boback, S., C. Montgomery, J. Hobert, E. Bergman, B. Hill, and S. P. Mackessy. 1996. Geographic distribution: Thamnophis crytopsis crytopsis. Herp. Rev. 27(4):215.
SB4	Boback, S., E. Bergman, C. Montgomery, J. Hobert, B. Hill, and S. P. Mackessy. 1997. Geographic distribution: Gastrophryne olivacea. Herp. Rev. 28(1):48.
RLB1	Bunn, R. L. 1995. Geographic distribution: Spea multiplicata. Herp. Rev. 26(1):42.
TC1	Childers, T., E. Bergman, J. D. Manzer, and S. P. Mackessy. 1998. Geographic distribution: Rana catesbeiana. Herp. Rev. 29(4):247.
DC1	Chiszar, D., and J. D. Drew. 1991. Geographic distribution: Pseudacris triseriata. Herp. Rev. 22(4):134.
DC2	Chiszar, D., and H. M. Smith. 1992. Geographic distribution: Terrapene ornata ornata. Herp. Rev. 23(1):26.
DC3	Chiszar, D., J. D. Drew, and H. M. Smith. 1992. Geographic distribution: Coluber constrictor flaviventris. Herp. Rev. 23(3):90.
DC4	Chiszar, D., J. D. Drew, and H. M. Smith. 1993. A range extension of the Great Plains rat snake in eastern Colorado. Bull. Chicago Herpetol. Soc. 27(8):165.
DC5	Chiszar, D., and H. M. Smith. 1993. Geographic distribution: Crotalus viridis viridis. Herp. Rev. 24(4):156.
DC6	Chiszar, D., and H. M. Smith. 1994. Geographic distribution: Tantilla nigriceps. Herp. Rev. 25(4):168.
DC7	Chiszar, D., L. J. Livo, R. R. J. Smith, and H. M. Smith. 1995. Geographic distribution: Crotalus viridis. Herp. Rev. 26(3):156.
DC8	Chiszar, D., and H. M. Smith. 1995. Geographic distribution: Spea multiplicata. Herp. Rev. 26(4):208.
DC9	Chiszar, D., D. Theodoratus, and H. M. Smith. 1995. Geographic distribution: Rana catesbeiana. Herp. Rev. 26(4):208.
DC10	Chiszar, D., and H. M. Smith. 1995. Geographic distribution: Chelydra serpentina serpentina. Herp. Rev. 26(4):208.
JTC1	Chopko, J. T. 1995. The Texas night snake (Hypsiglena torquata) in Las Animas County, Colorado. Cold Blooded News (Colorado Herpetological Society) 22(1):4.
CJC1	Cole, C. J., and L. M. Hardy. 1981. Systematics of North American colubrid snakes related to Tantilla planiceps (Blainville). Bull. Amer. Mus. Nat. Hist. 171:199-284.
PSC1	Corn, P. S. and R. B. Bury. 1986. Morphological variation and zoogeography of racers (Coluber constrictor) in the central Rocky Mountains. Herpetologica 42(2):258-264.
RPDeF1	DeFusco, R. P., D. Chiszar, and H. M. Smith. 1993. Geographic distribution: Sceloporus undulatus erythrocheilus. Herp. Rev. 24(4):155.
RPDeF2	DeFusco, R. P., D. Chiszar, and H. M. Smith. 1994. Geographic distribution: Liochlorophis vernalis blanchardi. Herp. Rev. 25(2):77.
BDeS1	DeSantis, B., B. Sheafor, H. M. Smith, and D. Chiszar. 1995. Geographic distribution: Chelydra serpentina serpentina. Herp. Rev. 26(3):154.
RJD1	Donoho, R., J. Hobert, C. Montgomery, K. Waldron, and S. P. Mackessy. 1996. Geographic distribution: Eumeces obsoletus. Herp. Rev. 27(1):32.
RME1	Engeman, R. M., and R. W. Connell. 1990. Boreal toad in Clear Creek County, Colorado. Northwest. Nat. 71(3):98.
RME2	Engeman, R. M. 1994. Geographic distribution: Apalone spinifera. Herp. Rev. 25(4):162.
CF1	Fetkavich, C., L. Livo, and H. M. Smith. 1997. Geographic distribution: Pseudacris triseriata. Herp. Rev. 28(2):93.
CDOW1	Gloyd, cited in CDOW Herptile Database (record 6402).
DEH1	Hahn, D. E. 1968. A biogeographic analysis of the herpetofauna of the San Luis Valley, Colorado. Unpubl. M.S. thesis, Louisiana State University, Baton Rouge, 103 pp.
GAH1	Hammerson, G. A., and L. J. Livo. In press. Conservation status of the northern cricket frog (Acris crepitans) in Colorado and adjacent areas at the northwestern extent of the range. Herp. Rev.
GAH2	Hammerson, G. A., L. Valentine, and L. J. Livo. 1991. Geographic distribution: Bufo debilis. Herp. Rev. 22(2):64.
GAH3	Hammerson, G. A., L. Valentine, and L. J. Livo. 1991. Geographic distribution: Bufo punctatus. Herp. Rev. 22(2):64.
GAH4	Hammerson, G. A., L. Valentine, and L. J. Livo. 1991. Geographic distribution: Arizona elegans. Herp. Rev. 22(2):66.
GAH5	Hammerson, G. A., L. Valentine, and L. J. Livo. 1991. Geographic distribution: Coluber constrictor. Herp. Rev. 22(2):67.
GAH6	Hammerson, G. A., L. Valentine, and L. J. Livo. 1991. Geographic distribution: Masticophis flagellum. Herp. Rev. 22(2):67-68.
GAH7	Hammerson, G. A., L. Valentine, and L. J. Livo. 1991. Geographic distribution: Rhinocheilus lecontei. Herp. Rev. 22(2):68.
GAH8	Hammerson, G. A., L. Valentine, and L. J. Livo. 1991. Geographic distribution: Sistrurus catenatus. Herp. Rev. 22(2):68.
GAH9	Hammerson, G. A., L. Valentine, and L. J. Livo. 1991. Geographic distribution: Tantilla hobartsmithi. Herp. Rev. 22(2):69.
GAH10	Hammerson, G. A., L. Valentine, and L. J. Livo. 1991. Geographic distribution: Tantilla nigriceps. Herp. Rev. 22(2):69.
GAH11	Hammerson, G. A., L. Valentine, and L. J. Livo. 1991. Geographic distribution: Leptotyphlops dulcis. Herp. Rev. 22(3):103.
GAH12	Hammerson, G. A., and H. M. Smith. 1993. Geographic distribution: Rana pipiens. Herp. Rev. 24(4):154.
GAH13	Hammerson, G. A., and H. M. Smith. 1993. Geographic distribution: Thamnophis sirtalis. Herp. Rev. 24(4):157.
SH1	Hart, S., and S. Manchester. 1993. Geographic distribution: Elaphe guttata emoryi. Herp. Rev. 24(4):156.
BH1	Hill, B., E. Bergman, C. Montgomery, J. Hobert, S. Boback, and S. P. Mackessy. 1997. Geographic distribution: Rhinocheilus lecontei tessellatus. Herp. Rev. 28(1):52.
BH2	Hill, B., E. Bergman, S. Boback, C. Montgomery, J. Hobert, and S. P. Mackessy. Submitted. Geographic distribution: Spea multiplicata. Herp. Rev.
JH1	Hobert, J., B. Quinn, R. Donoho, C. Montgomery, K. Waldron, and S. P. Mackessy. 1996. Geographic distribution: Arizona elegans elegans. Herp. Rev. 27(1):33.
JH2	Hobert, J., R. Donoho, C. Montgomery, K. Waldron, and S. P. Mackessy. 1996. Geographic distribution: Coluber constrictor flaviventris. Herp. Rev. 27(1):33.
JH3	Hobert, J. E. Bergman, C. Montgomery, B. Hill, S. Boback, S. P. Mackessy, R. L. Holland, D. Chiszar, and H. M. Smith. 1996. Geographic distribution: Rana catesbeiana. Herp. Rev. 27(4):209.
JH4	Hobert, J., S. Boback, C. Montgomery, E. Bergman, B. Hill, and S. P. Mackessy. 1997. Geographic distribution: Sistrurus catenatus edwardsii. Herp. Rev. 28(1):52.
JH5	Hobert, J., C. Montgomery, T. Childers, J. D. Manzer, E. Bergman, J. Sifert, B. Hill, and S. P. Mackessy. 1998. Geographic distribution: Chelydra serpentina serpentina. Herp. Rev. 29(2):109.
RLH1	Holland, R. L., and H. M. Smith. 1993. Geographic distribution: Sceloporus undulatus garmani. Herp. Rev. 24(4):155.
RLH2	Holland, R. L., D. Chiszar, C. Ristau, and H. M. Smith. 1994. Geographic distribution: Chrysemys picta belli. Herp. Rev. 25(4):163.
RLH3	Holland, R. L., and H. M. Smith. 1994. Geographic distribution: Terrapene ornata ornata. Herp. Rev. 25(4):163.
RLH4	Holland, R. L., and H. M. Smith. 1994. Geographic distribution: Eumeces obsoletus. Herp. Rev. 25(4):164.
RLH5	Holland, R. L., D. Chiszar, C. Ristau, and H. M. Smith. 1994. Geographic distribution: Nerodia sipedon sipedon. Herp. Rev. 25(4):168.
RLH6	Holland, R. L., and H. M. Smith. Submitted. Geographic distribution: Rana catesbeiana. Herp. Rev.
CDOW2	Horstman (1947, UCM 2561), cited in CDOW Herptile Database.
GPH1	Horstman, G. 1995. Geographic distribution: Sceloporus graciosus graciosus. Herp. Rev. 26(1):45.
GPH2	Horstman, G. 1995. Geographic distribution: Pituophis catenifer deserticola. Herp. Rev. 26(1):47.
GPH3	Horstman, G. P. 1995. Geographic distribution: Pseudacris triseriata. Herp. Rev. 26(4):208.
RH1	Humphrey, R., D. Chiszar, and H. M. Smith. 1995. Geographic distribution: Chelydra serpentina. Herp. Rev. 26(2):106.
MJ1	Janos, M., and D. Guadagno. 1997. Delta area. Pp. 247-255 in: H. R. Holt. A birder's guide to Colorado. Colorado Springs, CO: American Birding Association.
SDK1	Keefer, S. D., and C. W. Loeffler. 1998. Geographic distribution: Kinosternon flavescens flavescens. Herpetol. Rev. 29(1):50.
JK1	Kehmeier, J., C. Wagner, and L. J. Livo. 1996. Geographic distribution: Pseudacris triseriata. Herp. Rev. 27(3):150.
CL1	Loeffler, C. (ed.). 1998. Conservation plan and agreement for the management and recovery of the southern Rocky Mountain Population of the boreal toad (Bufo boreas) [Draft]. Colorado Division of Wildlife.
LJL1	Livo, L. J. 1988. Distributional records of amphibians and reptiles from Colorado. Herp. Rev. 19(3):60.
LJL2	Livo, L. J. 1993. Spiny softshell turtle distribution in Colorado. Prairie Nat. 25(4):355-357.
LJL3	Livo, L. J., D. Chiszar, and H. M. Smith. 1995. Geographic distribution: Pseudacris triseriata. Herp. Rev. 26(4):208.
LJL4	Livo, L. J., D. Chiszar, and H. M. Smith. 1996. Geographic distribution: Liochlorophis (=Opheodrys) vernalis. Herp. Rev. 27(3):154.
LJL5	Livo, L. J., G. A. Hammerson, and H. M. Smith. 1998. Summary of amphibians and reptiles introduced into Colorado. Northwestern Nat. 79(1):1-11.
LJL6	Livo, L. J., pers. obs.; Hammerson, G. A., pers. comm. (3/1998).
LJL7	Livo, L. J., G. A. Hammerson, H. M. Smith, D. Chiszar, and S. P. Mackessy. 1998. Status of chorus frogs (Genus Pseudacris) in southeastern Colorado. Bull. Maryland Herpetol. Soc. 34(1):22-28.
LJL8	Livo, L. J. Pers. obs.
SM1	Mackessy, S., R. Donoho, J. Hobert, C. Montgomery, and K. Waldron. 1996. Geographic distribution: Pseudacris triseriata maculata. Herp. Rev. 27(1):30.
SM2	Mackessy, S. P., J. Hobert, R. Donoho, C. Montgomery, and K. Waldron. 1996. Geographic distribution: Sistrurus catenatus tergeminus/edwardsii. Herp. Rev. 27(1):36.
SM3	Mackessy, S. P. 1996. A survey of the herpetofauna of southeastern Colorado with a focus on the current status of two candidates for protected species status: the massasauga rattlesnake and the Texas horned lizard. Unpubl. rept., Colorado Division of Wildlife, Denver.
SM4	Mackessy, S., pers. comm. (3/1998).
CM1	Montgomery, C., K. Waldron, J. Hobert, R. Donoho, and S. P. Mackessy. 1996. Geographic distribution: Diadophis punctatus arnyi. Herp. Rev. 27(1):33.
CM2	Montgomery, C., K. Waldron, J. Hobert, R. Donoho, and S. P. Mackessy. 1996. Geographic distribution: Tantilla nigriceps nigriceps. Herp. Rev. 27(1):36.
CM3	Montgomery, C., J. Hobert, E. Bergman, B. Hill, S. Boback, and S. P. Mackessy. 1997. Geographic distribution: Lampropeltis triangulum gentilis. Herp. Rev. 28(1):52.
CM4	Montgomery, C., T. Childers, E. Bergman, J. D. Manzer, J. Sifert, B. Hill, and S. P. Mackessy. 1998. Geographic distribution: Lampropeltis triangulum gentilis. Herp. Rev. 29(2):114.
CM5	Montgomery, C., T. Childers, E. Bergman, J. D. Manzer, J. Sifert, B. Hill, and S. P. Mackessy. 1998. Geographic distribution: Sistrurus catenatus edwardsii. Herp. Rev. 29(2):116.
CM6	Montgomery, C., T. Childers, J. D. Manzer, E. Bergman, J. Sifert, B. Hill, and S. P. Mackessy. 1998. Geographic distribution: Phrynosoma cornutum. Herp. Rev. 29(2):110.
CM7	Montgomery, C., T. Childers, E. Bergman, J. D. Manzer, J. Sifert, B. Hill, and S. P. Mackessy. 1998. Submitted. Geographic distribution: Lampropeltis triangulum gentilis. Herp. Rev.
TM1	Mourning, T. 1998. Amphibian and reptile survey, north portion of West Region, 1994-1996. Unpubl. rept., Colorado Division of Wildlife, West Regional Service Center, Hot Sulfur Springs.
DON1	Norris, D. O., E. J. Clark, and T. Kellogg. 1994. Geographic distribution: Rana catesbeiana. Herp. Rev. 25(4):161.
STP1	Pegler, S. T., D. Chiszar, and H. M: Smith. 1995. Geographic distribution: Sistrurus catenatus tergeminus x edwardsii. Herp. Rev. 26(1):47.
CR1	Ramotnik, C. In prep.
GHR	Rodeck, H. G. 1949. Notes on box turtles in Colorado. Copeia 1949(1):32-34.
JJR1	Roth, J. J., B. J. Johnson, and H. M. Smith. 1989. The western hognose snake, Heterodon nasicus, west of the Continental Divide in Colorado, and its implications. Bull. Chicago Herpetol. Soc. 24(9):161-163.
JJR2	Roth, J. J., and H. M. Smith. 1990. The milksnake, Lampropeltis triangulum, in northwest Colorado. Bull. Chicago Herpetol. Soc. 25(1):6-7.
JJR3	Roth, J. J., and H. M. Smith. 1990. Geographic distribution: Pituophis melanoleucus deserticola. Herp. Rev. 21(2):41.
BR1	Rouse, B., D. Chiszar, and H. M. Smith. 1995. Geographic distribution: Terrapene ornata ornata. Herp. Rev. 26(4):209.
JR1	Rybak, J. A., H. M. Smith, and D. Chiszar. 1995. Geographic distribution: Rana catesbeiana. Herp. Rev. 26(4):208.
JR2	Rybak, J. A., L. J. Livo, D. Chiszar, and H. M. Smith. 1996. Geographic distribution: Hypsiglena torquata loreala. Herp. Rev. 27(4):213.
BS1	Shipley, B., C. Henke, T. Morris, D. Chiszar, and H. M. Smith. 1996. Geographic distribution: Thamnophis crytopsis crytopsis. Herp. Rev. 27(4):215.
HMS1	Smith, H. M., T. P. Maslin, and R. L Brown. 1965. Summary of the distribution of the herpetofauna of Colorado. Univ. Colo. Stud., Ser. Biol. No. 15.
HMS2	Smith, H. M., G. A. Hammerson, J. J. Roth, and D. Chiszar. 1991. Distributional addenda for the smooth green snake (Opheodrys vernalis) in western Colorado, and the status of its subspecies. Bull. Maryland Herpetol. Soc. 27(2):99-106.
HMS3	Smith, H. M. 1991. Three new records of lizards in Ouray County, Colorado. Bull. Chicago Herpetol. Soc. 26(10):223.
HMS4	Smith, H. M., and D. Thompson. 1993. Four reptiles newly recorded from Ouray County, Colorado. Bull. Chicago Herpetol. Soc. 28(4):78-79.
HMS5	Smith, H. M., and R. L. Holland. 1993. Geographic distribution: Eumeces obsoletus. Herp. Rev. 24(2):66.
HMS6	Smith, H. M., and R. L. Holland. 1993. Geographic distribution: Eumeces multivirgatus multivirgatus. Herp. Rev. 24(2):66.
HMS7	Smith, H. M., G. A. Hammerson, D. Chiszar, and C. Ramotnik. 1993. Geographic distribution: Bufo cognatus. Herp. Rev. 24(4):152-153.
HMS8	Smith, H. M., G. A. Hammerson, D. Chiszar, and C. Ramotnik. 1993. Geographic distribution: Pseudacris triseriata. Herp. Rev. 24(4):153.
HMS9	Smith, H. M., G. A. Hammerson, D. Chiszar, and C. Ramotnik. 1993. Geographic distribution: Rana pipiens. Herp. Rev. 24(4):153.
HMS10	Smith, H. M., G. A. Hammerson, D. Chiszar, and C. Ramotnik. 1993. Geographic distribution: Eumeces multivirgatus multivirgatus. Herp. Rev. 24(4):154.
HMS11	Smith, H. M., G. A. Hammerson, D. Chiszar, and C. Ramotnik. 1993. Geographic distribution: Nerodia sipedon sipedon. Herp. Rev. 24(4):156.
HMS12	Smith, H. M., G. A. Hammerson, D. Chiszar, and C. Ramotnik. 1993. Geographic distribution: Crotalus viridis viridis. Herp. Rev. 24(4):156.
HMS13	Smith, H. M., G. A. Hammerson, D. Chiszar, and C. Ramotnik. 1993. Geographic distribution: Tantilla nigriceps. Herp. Rev. 24(4):157.
HMS14	Smith, H. M., and D. Chiszar. 1994. Geographic distribution: Tropidoclonion lineatum. Herp. Rev. 25(1):35.
HMS15	Smith, H. M., M. Laverty, and D. Chiszar. 1995. Geographic distribution: Pseudacris triseriata. Herp. Rev. 26(4):208.
HMS16	Smith, H. M., and D. Chiszar. 1995. Geographic distribution: Chrysemys picta belli. Herp. Rev. 26(3):154.
HMS17	Smith, H. M., C. Ristau, T. Bell, M. Bell, and D. Chiszar. 1995. Geographic distribution: Lampropeltis triangulum multistriata x taylori. Herp. Rev. 26(4):210.
HMS18	Smith, H. M., D. Chiszar, and J. J. Roth. 1996. Geographic distribution: Urosaurus ornatus wrighti. Herp. Rev. 27(4):211-212.
PHS1	Somers, P. H., L. J. Livo, R. R. J. Smith, D. Chiszar, and H. M. Smith. 1995. Geographic distribution: Coluber constrictor mormon. Herp. Rev. 26(3):156.
AS1	Spencer, A. 1971. Boreal chorus frogs (Pseudacris triseriata) breeding in the alpine in southwestern Colorado. Arctic Alpine Res. 3:353.
AS2	Spencer, A. pers. comm. (3/1998).
RHS1	Sperger, R. H., R. Humphrey, D. Chiszar, and H. M. Smith. 1995. Geographic distribution: Chelydra serpentina serpentina. Herp. Rev. 26(1):43.
RHS2	Sperger, R. H., R. Humphrey, D. Chiszar, and H. M. Smith. 1995. Geographic distribution: Chrysemys picta belli. Herp. Rev. 26(1):43.
RHS3	Sperger, R. H., R. Humphrey, D. Chiszar, and H. M. Smith. 1995. Geographic distribution: Coluber constrictor flaviventris. Herp. Rev. 26(1):46.
CAT1	Travis, C. A., D. Chiszar, and H. M. Smith. 1996. Geographic distribution: Heterodon nasicus. Herp Rev. 27(4):212.
CDOW3	Valentine, cited in CDOW Herptile Database (record number 8296).
FVanB1	Van Breukelen, F., J. Roth, and D. Chiszar. 1997. Geographical distribution: Sceloporus undulatus elongatus. Herpetol. Rev. 28(3):158.
KW1	Waldron, K., C. Montgomery, J. Hobert, R. Donoho, and S. P. Mackessy. 1996. Geographic distribution: Rhinocheilus lecontei tessellatus. Herp. Rev. 27(1):35.
JMW1	Walker, J. M., J. E. Cordes, and H. L. Taylor. 1997. Parthenogenetic Cnemidophorus tesselatus Complex (Sauria: Teiidae): a neotype for diploid C. tesselatus (Say, 1823), redescription of the taxon, and description of a new triploid species. Herpetologica 53(2):233-259.
JW1	Weins, J. 1987. La Junta side-trip. Colorado Herpetological Society Newsletter 15(6):4.
RJW1	Wiese, R. J. 1990. Survey of the bullfrog along the Front Range and in eastern Colorado, 1989. Unpubl. rept., Colorado Division of Wildlife, Denver.
BDW1	Will, B. D., D. Chiszar, and H. M. Smith. 1995. Geographic distribution: Chelydra serpentina serpentina. Herp. Rev. 26(4):208.
MBW1	Wunder, M. B., J. L. Siemers, and A. E. Ochs. 1998. Geographic distribution: Spea bombifrons Herpetol. Rev. 29(1):50.