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Shannon County, Missouri

Maps

Landmark Map

Landmark locality map for Shannon County, Missouri
Landmark locality map for Shannon County, Missouri
Map created 15 April 2026.

Interstate HighwayRailroadUS Army Corps of Engineers
US HighwayDepartment of ConservationUS Fish and Wildlife Service
State HighwayDepartment of Natural ResourcesNational Park Service
County HighwayUS Forest ServiceUS Department of Defense

Locator Map

Locator map for Shannon County, Missouri
Locator map for Shannon County, Missouri
Map created 15 April 2026.

Natural Divisions Locality Map

Natural divisions and sections locality map for Shannon County, Missouri
Natural Divisions locality map for Shannon County, Missouri
Map created 15 April 2026.

Ecological Drainage Unit Locality Map

Ecological drainage unit locality map for Shannon County, Missouri
Ecological Drainage Units locality map for Shannon County, Missouri
Map created 15 April 2026.

Major Watersheds Locality Map

Major watersheds locality map for Shannon County, Missouri
Major Watersheds locality map for Shannon County, Missouri
Map created 15 April 2026.

Major Rivers Locality Map

Major rivers locality map for Shannon County, Missouri
Major Rivers locality map for Shannon County, Missouri
Map created 15 April 2026.

Level I Ecoregion Locality Map

Level I Ecoregion locality map for Shannon County, Missouri
Level I Ecoregion locality map for Shannon County, Missouri
Map created 15 April 2026.

Level II Ecoregion Locality Map

Level II Ecoregion locality map for Shannon County, Missouri
Level II Ecoregion locality map for Shannon County, Missouri
Map created 15 April 2026.

Level III Ecoregion Locality Map

Level III Ecoregion locality map for Shannon County, Missouri
Level III Ecoregion locality map for Shannon County, Missouri
Map created 15 April 2026.

Level IV Ecoregion Locality Map

Level IV Ecoregion locality map for Shannon County, Missouri
Level IV Ecoregion locality map for Shannon County, Missouri
Map created 15 April 2026.

Presettlement Prairie Locality Map

Presettlement prairie locality map for Shannon County, Missouri
Presettlement Prairie locality map for Shannon County, Missouri
Map created 15 April 2026.

Historical Vegetation Map

Historical vegetation map for Shannon County, Missouri
Historical Vegetation map for Shannon County, Missouri
Map created 15 April 2026.

WaterPrairieBarrens / Scrub
ForestWoodlandOpen Woodland

Geology Locality Map

Geology locality map for Shannon County, Missouri
Geology locality map for Shannon County, Missouri
Map created 15 April 2026.

AlluviumSandstoneDolomiteLimestone
ClaySandstone / LimestoneDolomite / LimestoneLimestone / Sandstone
IgneousSandstone / DolomiteDolomite / ShaleLimestone / Shale
Limestone / Sandstone / Shale

Species List

Salamanders (Caudata)

Frogs (Anura)

Lizards (Squamata, "Lizards")

Snakes (Squamata, "Snakes")

Turtles (Testudines)

Collection Summary

Shannon County has a total of 624 valid, non-duplicated collections representing 66 species and 291 localities. There are a total of 128 collectors and 185 collection dates for the county. This results in a total of 228 expeditions for the county, a measure of unique date / collector(s) combinations. The county's earliest collection year is 1928 and its most recent collection year is 2025. The earliest and latest collection dates (independent of earliest and most recent collection years) are January 9 and October 26, respectively. If you have a new record to report for Shannon County, read the New Records section of the FAQ.

Collection Summary by Species

Collection summary for Shannon County by species. Some values are unavailable since some records are represented solely by historical literature reports, which sometimes lack complete collecting data. Click on a species or common name to view more information about that species. Click on column headings to sort by that column.
Species Common Name Localities Collections Collectors Dates Expeditions Earliest Year Latest Year
Acris blanchardi Blanchard's Cricket Frog 16 38 17 16 18 1932 2016
Agkistrodon contortrix Eastern Copperhead 8 8 11 7 7 1963 2023
Agkistrodon piscivorus Northern Cottonmouth 6 8 7 7 7 1960 2025
Ambystoma annulatum Ringed Salamander 2 3 2 2 2 1984 2010
Ambystoma maculatum Spotted Salamander 7 14 12 7 8 1973 2014
Ambystoma opacum Marbled Salamander 2 2 1 1 1 1934 1934
Anaxyrus americanus American Toad 7 8 12 6 6 1941 2017
Anaxyrus fowleri Fowler's Toad 5 11 6 5 5 1941 2010
Apalone spinifera Northern Spiny Softshell 11 11 11 9 9 1950 2025
Aspidoscelis sexlineatus Prairie Racerunner 3 3 2 3 3 1941 1992
Carphophis vermis Western Wormsnake 9 11 11 8 9 1963 2010
Chelydra serpentina North American Snapping Turtle 4 4 5 4 4 1940 2022
Chrysemys picta Western Painted Turtle 2 2 5 2 2 2004 2008
Coluber constrictor North American Racer 8 8 14 8 8 1941 2010
Crotalus horridus Timber Rattlesnake 3 3 3 3 3 1992 2011
Crotaphytus collaris Eastern Collared Lizard 1 1 1 1 1 2018 2018
Cryptobranchus alleganiensis Hellbender 3 5 3 3 3 1962 1988
Diadophis punctatus Ring-necked Snake 7 8 10 6 6 1940 2010
Dryophytes chrysoscelis Cope's Gray Treefrog 1 1 2 1 1 2007 2007
Eurycea longicauda Long-tailed Salamander 10 12 19 10 10 1963 2023
Eurycea lucifuga Cave Salamander 20 39 31 21 23 1928 2025
Eurycea nerea Northern Grotto Salamander 17 27 18 17 17 1934 2025
Gastrophryne carolinensis Eastern Narrow-mouthed Toad 1 2 1 1 1 1992 1992
Graptemys geographica Northern Map Turtle 66 87 17 33 33 1939 2025
Graptemys pseudogeographica False Map Turtle 1 1 1 1 1 2017 2017
Hemidactylium scutatum Four-toed Salamander 2 3 4 2 2 1990 1997
Heterodon platirhinos Eastern Hog-nosed Snake 4 4 5 4 4 1962 2008
Kinosternon subrubrum Mississippi Mud Turtle 1 2 1 1 1 2007 2007
Lampropeltis calligaster Prairie Kingsnake 1 1 1 1 1 1992 1992
Lampropeltis holbrooki Speckled Kingsnake 3 3 10 3 3 1991 2010
Lampropeltis triangulum Eastern Milksnake 3 3 9 3 3 1964 2003
Lithobates catesbeianus North American Bullfrog 6 14 9 8 8 1930 2003
Lithobates clamitans North American Green Frog 9 18 7 10 10 1940 1965
Lithobates palustris Pickerel Frog 9 14 10 8 8 1963 2010
Lithobates sphenocephalus Coastal Plains Leopard Frog 9 12 8 8 8 1931 1963
Lithobates sylvaticus Wood Frog 2 2 3 2 2 2004 2015
Macrochelys temminckii Western Alligator Snapping Turtle 2 3 2 2 2 1953 2004
Masticophis flagellum Eastern Coachwhip 4 4 4 4 4 1941 1963
Necturus louisianensis Red River Mudpuppy 4 4 4 3 3 1941 1980
Nerodia sipedon Common Watersnake 19 30 18 14 15 1940 2020
Notophthalmus viridescens Central Newt 14 20 13 10 11 1970 2010
Opheodrys aestivus Northern Rough Greensnake 3 4 3 3 3 2006 2008
Pantherophis emoryi Great Plains Ratsnake 1 1 1 1 1 1950 1950
Pantherophis obsoletus Western Ratsnake 8 9 13 8 8 1941 2008
Plestiodon anthracinus Southern Coal Skink 3 3 3 3 3 1941 1973
Plestiodon fasciatus Common Five-lined Skink 12 15 11 12 13 1941 2010
Plestiodon laticeps Broad-headed Skink 2 2 3 2 2 1941 2002
Plethodon albagula Western Slimy Salamander 7 9 7 6 7 1963 2003
Plethodon serratus Southern Red-backed Salamander 6 6 12 6 6 1970 2010
Pseudacris crucifer Spring Peeper 7 17 15 6 9 1983 2009
Pseudacris feriarum Upland Chorus Frog 2 2 1 2 2 1961 1961
Pseudemys concinna Eastern River Cooter 5 6 6 4 5 1983 2025
Sceloporus consobrinus Prairie Lizard 15 25 21 16 17 1932 2010
Scincella lateralis Little Brown Skink 8 9 10 6 7 1941 2010
Sistrurus miliarius Western Pygmy Rattlesnake 9 11 11 10 10 1939 2017
Sternotherus odoratus Eastern Musk Turtle 3 3 7 3 3 2003 2010
Storeria dekayi DeKay's Brownsnake 5 5 15 5 5 2003 2023
Storeria occipitomaculata Red-bellied Snake 1 1 1 1 1 1992 1992
Tantilla gracilis Flat-headed Snake 4 6 5 4 4 1950 2002
Terrapene ornata Ornate Box Turtle 1 1 1 1 1 1932 1932
Terrapene triunguis Three-toed Box Turtle 8 9 11 7 7 1932 2020
Thamnophis proximus Orange-striped Ribbonsnake 4 4 5 4 4 1938 2003
Thamnophis sirtalis Common Gartersnake 3 4 3 4 4 1963 1977
Trachemys scripta Red-eared Slider 4 4 7 3 3 2002 2025
Virginia striatula Rough Earthsnake 2 2 3 2 2 1997 2002
Virginia valeriae Western Smooth Earthsnake 5 11 6 4 4 2002 2008

Potential Species Records

Potential species for Shannon County. Species are listed in descending order of their likelihood of occurrence within the county. Click on a species or common name to view more information about that species. Click on column headings to sort by that column.
Likelihood Species Common Name Rationale Ecoregion / Watershed
2 Ophisaurus attenuatus Western Slender Glass Lizard Same Level IV ecoregion, within 5 miles Current River Hills
4 Dryophytes cinereus Green Treefrog Same Level IV ecoregion, within 10 miles Current River Hills
4 Pituophis catenifer Bullsnake Same Level IV ecoregion, within 10 miles Current River Hills
6 Ambystoma tigrinum Eastern Tiger Salamander Same Level IV ecoregion, within 20 miles Central Plateau
6 Dryophytes versicolor Gray Treefrog Same Level IV ecoregion, within 20 miles Central Plateau
6 Eurycea tynerensis Oklahoma Salamander Same Level IV ecoregion, within 20 miles Central Plateau
6 Nerodia erythrogaster Yellow-bellied Watersnake Same Level IV ecoregion, within 20 miles Central Plateau
7 Siren nettingi Western Lesser Siren Same Level III ecoregion, within 20 miles Ozark Highlands
8 Graptemys ouachitensis Ouachita Map Turtle Same watershed, within 30 miles Current
9 Plethodon angusticlavius Ozark Zigzag Salamander Same Level III ecoregion, within 30 miles Ozark Highlands
11 Nerodia fasciata Broad-banded Watersnake Same Level III ecoregion, adjacent county Ozark Highlands

Checklist

All MOHAP publications are released in portable document format (PDF), an ISO standard. You must download and install a reader (click icon below) to view these documents. A state checklist, including all counties, is available on the publications page.