This site will look much better in a browser that supports web standards, but it is accessible to any browser or Internet device.

Clark County, Missouri

Maps

Landmark Map

Landmark locality map for Clark County, Missouri
Landmark locality map for Clark County, Missouri
Map created 6 March 2024.

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 Clark County, Missouri
Locator map for Clark County, Missouri
Map created 6 March 2024.

Natural Divisions Locality Map

Natural divisions and sections locality map for Clark County, Missouri
Natural Divisions locality map for Clark County, Missouri
Map created 6 March 2024.

Ecological Drainage Unit Locality Map

Ecological drainage unit locality map for Clark County, Missouri
Ecological Drainage Units locality map for Clark County, Missouri
Map created 6 March 2024.

Major Watersheds Locality Map

Major watersheds locality map for Clark County, Missouri
Major Watersheds locality map for Clark County, Missouri
Map created 6 March 2024.

Major Rivers Locality Map

Major rivers locality map for Clark County, Missouri
Major Rivers locality map for Clark County, Missouri
Map created 6 March 2024.

Level I Ecoregion Locality Map

Level I Ecoregion locality map for Clark County, Missouri
Level I Ecoregion locality map for Clark County, Missouri
Map created 6 March 2024.

Level II Ecoregion Locality Map

Level II Ecoregion locality map for Clark County, Missouri
Level II Ecoregion locality map for Clark County, Missouri
Map created 6 March 2024.

Level III Ecoregion Locality Map

Level III Ecoregion locality map for Clark County, Missouri
Level III Ecoregion locality map for Clark County, Missouri
Map created 6 March 2024.

Level IV Ecoregion Locality Map

Level IV Ecoregion locality map for Clark County, Missouri
Level IV Ecoregion locality map for Clark County, Missouri
Map created 6 March 2024.

Presettlement Prairie Locality Map

Presettlement prairie locality map for Clark County, Missouri
Presettlement Prairie locality map for Clark County, Missouri
Map created 6 March 2024.

Historical Vegetation Map

Historical vegetation map for Clark County, Missouri
Historical Vegetation map for Clark County, Missouri
Map created 6 March 2024.

WaterPrairieBarrens / Scrub
ForestWoodlandOpen Woodland

Geology Locality Map

Geology locality map for Clark County, Missouri
Geology locality map for Clark County, Missouri
Map created 6 March 2024.

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

Species List

Salamanders (Caudata)

Frogs (Anura)

Lizards (Lacertilia)

Snakes (Serpentes)

Turtles (Testudines)

Collection Summary

Clark County has a total of 145 valid, non-duplicated collections representing 45 species and 63 localities. There are a total of 37 collectors and 71 collection dates for the county. This results in a total of 76 expeditions for the county, a measure of unique date / collector(s) combinations. The county's earliest collection year is 1910 and its most recent collection year is 2021. The earliest and latest collection dates (independent of earliest and most recent collection years) are April 12 and October 20, respectively. If you have a new record to report for Clark County, read the New Records section of the FAQ.

Collection Summary by Species

Collection summary for Clark 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 3 3 8 3 3 1981 2007
Agkistrodon contortrix Copperhead 1 1 1 1 1 1957 1957
Ambystoma texanum Small-mouthed Salamander 1 1 2 1 1 2019 2019
Ambystoma tigrinum Eastern Tiger Salamander 2 2 3 2 2 1993 2008
Anaxyrus americanus American Toad 1 2 1 1 1 1990 1990
Anaxyrus fowleri Fowler's Toad 1 1 4 1 1 2006 2006
Apalone mutica Midland Smooth Softshell 1 2 1 1 1 1916 1916
Apalone spinifera Eastern Spiny Softshell 1 1 1 1 1 2013 2013
Aspidoscelis sexlineata Six-lined Racerunner 2 2 6 2 2 2006 2018
Chelydra serpentina Snapping Turtle 1 1 1 1 1 1960 1960
Chrysemys picta Western Painted Turtle 4 5 3 3 5 1983 1996
Clonophis kirtlandii Kirtland's Snake 1 3 1 2 2 2006 2006
Coluber constrictor North American Racer 1 1 2 1 1 2011 2011
Crotalus horridus Timber Rattlesnake 1 1 1 1 1
Diadophis punctatus Ring-necked Snake 1 1 1 1 1 2010 2010
Emydoidea blandingii Blanding's Turtle 7 8 3 6 6 1941 1981
Graptemys geographica Northern Map Turtle 1 2 1 1 1 1960 1960
Graptemys pseudogeographica False Map Turtle 1 2 1 1 1 2013 2013
Heterodon platirhinos Eastern Hog-nosed Snake 2 2 2 2 2 1979 2011
Hyla versicolor Gray Treefrog 1 1 3 1 1 2021 2021
Kinosternon flavescens Yellow Mud Turtle 3 32 4 22 22 1978 1990
Lampropeltis calligaster Prairie Kingsnake 2 2 2 2 2 1971 2004
Lampropeltis triangulum Eastern Milksnake 1 1 1 1 1 1990 1990
Lithobates blairi Plains Leopard Frog 6 16 2 2 4 1995 1996
Lithobates catesbeianus American Bullfrog 2 2 1 2 2 1960 1961
Lithobates clamitans Green Frog 2 2 2 1 2 1995 1995
Lithobates sphenocephalus Southern Leopard Frog 1 1 3 1 1 2006 2006
Nerodia rhombifer Diamond-backed Watersnake 2 4 2 2 2 2013 2013
Nerodia sipedon Common Watersnake 3 3 4 3 3 1979 2011
Ophisaurus attenuatus Western Slender Glass Lizard 1 1 1 1 1 1982 1982
Pantherophis obsoletus Western Ratsnake 2 2 2 2 2 1979 2005
Pantherophis vulpinus Eastern Foxsnake 1 1 1 1 1 1980 1980
Pituophis catenifer Bullsnake 1 1 1 1 1 2013 2013
Plestiodon fasciatus Common Five-lined Skink 1 2 1 2 2 1910 2002
Pseudacris crucifer Spring Peeper 1 3 1 1 1 1990 1990
Regina grahamii Graham's Crawfish Snake 5 8 2 5 5 1979 1990
Sternotherus odoratus Eastern Musk Turtle 1 1 1 1 1 2013 2013
Storeria dekayi DeKay's Brownsnake 3 3 1 1 1 2013 2013
Storeria occipitomaculata Northern Red-bellied Snake 1 1 1 1 1 2010 2010
Terrapene carolina Three-toed Box Turtle 1 1 1 1 1 1960 1960
Terrapene ornata Ornate Box Turtle 3 3 3 3 3 1934 2018
Thamnophis proximus Orange-striped Ribbonsnake 3 5 3 2 3 1995 2007
Thamnophis sirtalis Common Gartersnake 2 2 2 2 2 2013 2013
Trachemys scripta Red-eared Slider 5 5 5 4 5 1960 2012
Tropidoclonion lineatum Lined Snake 1 1 2 1 1 1995 1995

Potential Species Records

Potential species for Clark 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 Pseudacris maculata Boreal Chorus Frog Same Level IV ecoregion, within 5 miles Loess Flats and Till Plains
4 Macrochelys temminckii Alligator Snapping Turtle Same watershed, within 10 miles Bear-Wyaconda
4 Necturus maculosus Mudpuppy Same watershed, within 10 miles Bear-Wyaconda
6 Carphophis vermis Western Wormsnake Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Lithobates palustris Pickerel Frog Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Virginia valeriae Western Smooth Earthsnake Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
8 Lithobates sylvaticus Wood Frog Same Level IV ecoregion, within 30 miles Loess Flats and Till Plains
9 Lampropeltis holbrooki Speckled Kingsnake Same Level III ecoregion, within 30 miles Central Irregular Plains
9 Lampropeltis holbrooki Speckled Kingsnake Same Level III ecoregion, within 30 miles Interior River Valleys and Hills
9 Lithobates areolatus Northern Crawfish Frog Same Level III ecoregion, within 30 miles Central Irregular Plains
10 Opheodrys aestivus Northern Rough Greensnake Same Level IV ecoregion, adjacent county Loess Flats and Till Plains
10 Sistrurus catenatus Eastern Massasauga Same Level IV ecoregion, adjacent county Upper Mississippi Alluvial Plain

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.