MOHAP - Marion County

Maps

Landmark Map

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

Interstate Highway	Railroad	US Army Corps of Engineers
US Highway	Department of Conservation	US Fish and Wildlife Service
State Highway	Department of Natural Resources	National Park Service
County Highway	US Forest Service	US Department of Defense

Locator Map

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

Natural Divisions Locality Map

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

Ecological Drainage Unit Locality Map

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

Major Watersheds Locality Map

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

Major Rivers Locality Map

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

Level I Ecoregion Locality Map

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

Level II Ecoregion Locality Map

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

Level III Ecoregion Locality Map

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

Level IV Ecoregion Locality Map

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

Presettlement Prairie Locality Map

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

Historical Vegetation Map

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

	Water		Prairie		Barrens / Scrub
	Forest		Woodland		Open Woodland

Geology Locality Map

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

Alluvium	Sandstone	Dolomite	Limestone
Clay	Sandstone / Limestone	Dolomite / Limestone	Limestone / Sandstone
Igneous	Sandstone / Dolomite	Dolomite / Shale	Limestone / Shale
			Limestone / Sandstone / Shale

Species List

Salamanders (Caudata)

Ambystoma texanum (Matthes, 1855) - Small-mouthed Salamander
Ambystoma tigrinum (Green, 1825) - Eastern Tiger Salamander
Notophthalmus viridescens (Rafinesque, 1820) - Central Newt
Eurycea longicauda (Green, 1818) - Long-tailed Salamander

Frogs (Anura)

Anaxyrus americanus (Holbrook, 1836) - American Toad
Anaxyrus fowleri (Hinckley, 1882) - Fowler's Toad
Acris blanchardi Harper, 1947 - Blanchard's Cricket Frog
Pseudacris crucifer (Wied-Neuwied, 1838) - Spring Peeper
Pseudacris maculata (Agassiz, 1850) - Boreal Chorus Frog
Lithobates catesbeianus (Shaw, 1802) - North American Bullfrog
Lithobates palustris (LeConte, 1825) - Pickerel Frog
Lithobates sphenocephalus (Cope, 1886) - Coastal Plains Leopard Frog
Lithobates sylvaticus (LeConte, 1825) - Wood Frog

Lizards (Squamata, "Lizards")

(none)

Snakes (Squamata, "Snakes")

Coluber constrictor Linnaeus, 1758 - North American Racer
Lampropeltis calligaster (Harlan, 1827) - Prairie Kingsnake
Lampropeltis triangulum (Lacépède, 1789) - Eastern Milksnake
Pantherophis vulpinus (Baird and Girard, 1853) - Eastern Foxsnake
Carphophis vermis (Kennicott, 1859) - Western Wormsnake
Diadophis punctatus (Linnaeus, 1766) - Ring-necked Snake
Heterodon platirhinos Palisot de Beauvois in Sonnini de Manoncourt and Latreille, 1801 - Eastern Hog-nosed Snake
Clonophis kirtlandii (Kennicott, 1856) - Kirtland's Snake
Nerodia sipedon (Linnaeus, 1758) - Common Watersnake
Regina grahamii Baird and Girard, 1853 - Graham's Crawfish Snake
Storeria dekayi (Holbrook, 1839) - DeKay's Brownsnake
Storeria occipitomaculata (Storer, 1839) - Red-bellied Snake
Thamnophis proximus (Say in James, 1822) - Orange-striped Ribbonsnake
Thamnophis sirtalis (Linnaeus, 1758) - Common Gartersnake
Virginia valeriae Baird and Girard, 1853 - Western Smooth Earthsnake
Agkistrodon contortrix (Linnaeus, 1766) - Eastern Copperhead

Turtles (Testudines)

Chelydra serpentina (Linnaeus, 1758) - North American Snapping Turtle
Chrysemys picta (Schneider, 1783) - Western Painted Turtle
Graptemys geographica (LeSueur, 1817) - Northern Map Turtle
Graptemys ouachitensis Cagle, 1953 - Ouachita Map Turtle
Graptemys pseudogeographica (Gray, 1831) - False Map Turtle
Terrapene triunguis (Agassiz, 1857) - Three-toed Box Turtle
Trachemys scripta (Thunberg in Schoepff, 1792) - Red-eared Slider
Apalone mutica (LeSueur, 1827) - Midland Smooth Softshell
Apalone spinifera (LeSueur, 1827) - Northern Spiny Softshell

Collection Summary

Marion County has a total of 88 valid, non-duplicated collections representing 38 species and 49 localities. There are a total of 22 collectors and 53 collection dates for the county. This results in a total of 57 expeditions for the county, a measure of unique date / collector(s) combinations. The county's earliest collection year is 1933 and its most recent collection year is 2025. The earliest and latest collection dates (independent of earliest and most recent collection years) are January 6 and December 7, respectively. If you have a new record to report for Marion County, read the New Records section of the FAQ.

Collection Summary by Species

Collection summary for Marion 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	1	1	1	1	1	1947	1947
Agkistrodon contortrix	Eastern Copperhead	1	1	1	1	1	1998	1998
Ambystoma texanum	Small-mouthed Salamander	1	1	1	1	1	2001	2001
Ambystoma tigrinum	Eastern Tiger Salamander	2	2	2	2	2	1966	2022
Anaxyrus americanus	American Toad	2	2	2	2	2	1947	2025
Anaxyrus fowleri	Fowler's Toad	1	1	1	1	1	1985	1985
Apalone mutica	Midland Smooth Softshell	1	1	1	1	1	2006	2006
Apalone spinifera	Northern Spiny Softshell	1	1	1	1	1	2006	2006
Carphophis vermis	Western Wormsnake	1	1	1	1	1	2006	2006
Chelydra serpentina	North American Snapping Turtle	1	1	1	1	1	1946	1946
Chrysemys picta	Western Painted Turtle	1	1	1	1	1	2006	2006
Clonophis kirtlandii	Kirtland's Snake	2	2	2	2	2	1967	2007
Coluber constrictor	North American Racer	2	2	2	2	2	2002	2015
Diadophis punctatus	Ring-necked Snake	1	1	1	1	1	1950	1950
Eurycea longicauda	Long-tailed Salamander	2	8	3	2	3	1958	1958
Graptemys geographica	Northern Map Turtle	1	1	1	1	1	2006	2006
Graptemys ouachitensis	Ouachita Map Turtle	2	3	3	2	2	2005	2006
Graptemys pseudogeographica	False Map Turtle	2	3	2	3	3	1958	1959
Heterodon platirhinos	Eastern Hog-nosed Snake	2	2	2	2	2	2002	2009
Lampropeltis calligaster	Prairie Kingsnake	3	7	2	7	7	1946	2015
Lampropeltis triangulum	Eastern Milksnake	3	4	2	2	2	2001	2013
Lithobates catesbeianus	North American Bullfrog	2	4	2	2	2	1947	1970
Lithobates palustris	Pickerel Frog	2	2	2	2	2	1933	1933
Lithobates sphenocephalus	Coastal Plains Leopard Frog	1	1	2	1	1	2005	2005
Lithobates sylvaticus	Wood Frog	1	1	1	1	1	1997	1997
Nerodia sipedon	Common Watersnake	3	3	3	3	3	1947	1995
Notophthalmus viridescens	Central Newt	1	1	1	1	1	2001	2001
Pantherophis vulpinus	Eastern Foxsnake	1	1	1	1	1	1986	1986
Pseudacris crucifer	Spring Peeper	1	2	1	1	1	1997	1997
Pseudacris maculata	Boreal Chorus Frog	2	2	2	2	2	1983	1997
Regina grahamii	Graham's Crawfish Snake	3	4	1	3	3	1947	1947
Storeria dekayi	DeKay's Brownsnake	2	2	2	2	2	1983	2002
Storeria occipitomaculata	Red-bellied Snake	1	1	1	1	1	2002	2002
Terrapene triunguis	Three-toed Box Turtle	1	2	1	1	1
Thamnophis proximus	Orange-striped Ribbonsnake	2	2	2	2	2	1984	2015
Thamnophis sirtalis	Common Gartersnake	4	10	4	9	9	1946	2018
Trachemys scripta	Red-eared Slider	2	3	3	2	2	2006	2018
Virginia valeriae	Western Smooth Earthsnake	1	1	1	1	1	2003	2003

Potential Species Records

Potential species for Marion 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	Dryophytes versicolor	Gray Treefrog	Same Level IV ecoregion, within 5 miles	Loess Flats and Till Plains
2	Lampropeltis holbrooki	Speckled Kingsnake	Same Level IV ecoregion, within 5 miles	River Hills
2	Lithobates blairi	Plains Leopard Frog	Same Level IV ecoregion, within 5 miles	Upper Mississippi Alluvial Plain
2	Lithobates clamitans	North American Green Frog	Same Level IV ecoregion, within 5 miles	Upper Mississippi Alluvial Plain
2	Pantherophis obsoletus	Western Ratsnake	Same Level IV ecoregion, within 5 miles	Claypan Prairie
2	Plestiodon fasciatus	Common Five-lined Skink	Same Level IV ecoregion, within 5 miles	River Hills
4	Crotalus horridus	Timber Rattlesnake	Same Level IV ecoregion, within 10 miles	River Hills
4	Sceloporus consobrinus	Prairie Lizard	Same Level IV ecoregion, within 10 miles	River Hills
4	Sceloporus consobrinus	Prairie Lizard	Same Level IV ecoregion, within 10 miles	Upper Mississippi Alluvial Plain
4	Scincella lateralis	Little Brown Skink	Same Level IV ecoregion, within 10 miles	River Hills
4	Terrapene ornata	Ornate Box Turtle	Same Level IV ecoregion, within 10 miles	River Hills
6	Ambystoma maculatum	Spotted Salamander	Same Level IV ecoregion, within 20 miles	River Hills
6	Kinosternon flavescens	Yellow Mud Turtle	Same Level IV ecoregion, within 20 miles	Loess Flats and Till Plains
6	Macrochelys temminckii	Western Alligator Snapping Turtle	Same watershed, within 20 miles	Bear-Wyaconda
6	Necturus maculosus	Mudpuppy	Same watershed, within 20 miles	Bear-Wyaconda
6	Nerodia erythrogaster	Yellow-bellied Watersnake	Same Level IV ecoregion, within 20 miles	River Hills
6	Nerodia rhombifer	Northern Diamond-backed Watersnake	Same Level IV ecoregion, within 20 miles	River Hills
6	Nerodia rhombifer	Northern Diamond-backed Watersnake	Same Level IV ecoregion, within 20 miles	Upper Mississippi Alluvial Plain
6	Opheodrys aestivus	Northern Rough Greensnake	Same Level IV ecoregion, within 20 miles	River Hills
6	Ophisaurus attenuatus	Western Slender Glass Lizard	Same Level IV ecoregion, within 20 miles	River Hills
6	Plestiodon laticeps	Broad-headed Skink	Same Level IV ecoregion, within 20 miles	Upper Mississippi Alluvial Plain
6	Plestiodon laticeps	Broad-headed Skink	Same Level IV ecoregion, within 20 miles	River Hills
6	Siren nettingi	Western Lesser Siren	Same Level IV ecoregion, within 20 miles	Upper Mississippi Alluvial Plain
6	Siren nettingi	Western Lesser Siren	Same Level IV ecoregion, within 20 miles	River Hills
6	Sternotherus odoratus	Eastern Musk Turtle	Same watershed, within 20 miles	Bear-Wyaconda
8	Aspidoscelis sexlineatus	Prairie Racerunner	Same Level IV ecoregion, within 30 miles	River Hills
8	Emydoidea blandingii	Blanding's Turtle	Same Level IV ecoregion, within 30 miles	Upper Mississippi Alluvial Plain
8	Lithobates areolatus	Northern Crawfish Frog	Same Level IV ecoregion, within 30 miles	Claypan Prairie
8	Tropidoclonion lineatum	Lined Snake	Same Level IV ecoregion, within 30 miles	Loess Flats and Till Plains
10	Sistrurus catenatus	Eastern Massasauga	Same Level IV ecoregion, adjacent county	Upper Mississippi Alluvial Plain
10	Sistrurus catenatus	Eastern Massasauga	Same Level IV ecoregion, adjacent county	River Hills

Checklist

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Missouri Herpetological Atlas Project

Marion County, Missouri