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Mercer County, Missouri

Species List

Salamanders (Caudata)

Frogs (Anura)

Lizards (Lacertilia)

Snakes (Serpentes)

Turtles (Testudines)

Collection Summary

Mercer County has a total of 31 valid, non-duplicated collections representing 17 species and 12 localities. There are a total of 13 collectors and 10 collection dates for the county. This results in a total of 10 expeditions for the county, a measure of unique date / collector(s) combinations. The county's earliest collection year is 1938 and its most recent collection year is 2018. The earliest and latest collection dates (independent of earliest and most recent collection years) are April 3 and September 13, respectively. If you have a new record to report for Mercer County, read the New Records section of the FAQ.

Collection Summary by Species

Collection summary for Mercer 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 3 1 1 1 1985 1985
Ambystoma tigrinum Eastern Tiger Salamander 1 6 1 1 1
Anaxyrus americanus American Toad 2 4 2 2 2 1938 1983
Chelydra serpentina Snapping Turtle 2 2 3 2 2 2010 2011
Chrysemys picta Western Painted Turtle 1 1 1 1 1 2011 2011
Coluber constrictor North American Racer 1 1 1 1 1 1950 1950
Crotalus horridus Timber Rattlesnake 1 1 2 1 1 2018 2018
Diadophis punctatus Ring-necked Snake 2 2 1 1 1 1983 1983
Lampropeltis calligaster Prairie Kingsnake 2 2 2 2 2 1983 2011
Lithobates blairi Plains Leopard Frog 1 1 1 1 1 1983 1983
Lithobates catesbeianus American Bullfrog 1 1 1 1 1 1983 1983
Lithobates pipiens Northern Leopard Frog 1 1 2 1 1 2009 2009
Nerodia sipedon Common Watersnake 1 1 1 1 1 1983 1983
Pantherophis obsoletus Western Ratsnake 1 1 1 1 1 1983 1983
Pseudacris crucifer Spring Peeper 1 1 2 1 1 2009 2009
Thamnophis proximus Orange-striped Ribbonsnake 1 1 1 1 1 1983 1983
Thamnophis sirtalis Common Gartersnake 1 1 1 1 1 1983 1983

Potential Species Records

Potential species for Mercer 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
2 Pseudacris maculata Boreal Chorus Frog Same Level IV ecoregion, within 5 miles Loess Flats and Till Plains
2 Storeria dekayi DeKay's Brownsnake Same Level IV ecoregion, within 5 miles Loess Flats and Till Plains
2 Storeria dekayi DeKay's Brownsnake Same Level IV ecoregion, within 5 miles Loess Flats and Till Plains
4 Agkistrodon contortrix Copperhead Same Level IV ecoregion, within 10 miles Loess Flats and Till Plains
4 Agkistrodon contortrix Copperhead Same Level IV ecoregion, within 10 miles Loess Flats and Till Plains
4 Ambystoma texanum Small-mouthed Salamander Same Level IV ecoregion, within 10 miles Loess Flats and Till Plains
4 Carphophis vermis Western Wormsnake Same Level IV ecoregion, within 10 miles Loess Flats and Till Plains
4 Carphophis vermis Western Wormsnake Same Level IV ecoregion, within 10 miles Loess Flats and Till Plains
4 Lampropeltis holbrooki Speckled Kingsnake Same Level IV ecoregion, within 10 miles Loess Flats and Till Plains
4 Lampropeltis holbrooki Speckled Kingsnake Same Level IV ecoregion, within 10 miles Loess Flats and Till Plains
4 Lampropeltis triangulum Eastern Milksnake Same Level IV ecoregion, within 10 miles Loess Flats and Till Plains
4 Lampropeltis triangulum Eastern Milksnake Same Level IV ecoregion, within 10 miles Loess Flats and Till Plains
4 Plestiodon fasciatus Common Five-lined Skink Same Level IV ecoregion, within 10 miles Loess Flats and Till Plains
4 Thamnophis radix Plains Gartersnake Same Level IV ecoregion, within 10 miles Loess Flats and Till Plains
6 Heterodon platirhinos Eastern Hog-nosed Snake Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Heterodon platirhinos Eastern Hog-nosed Snake Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Hyla versicolor Gray Treefrog Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Hyla versicolor Gray Treefrog Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Lithobates sphenocephalus Southern Leopard Frog Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Nerodia rhombifer Diamond-backed Watersnake Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Opheodrys vernalis Smooth Greensnake Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Opheodrys vernalis Smooth Greensnake Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Pituophis catenifer Bullsnake Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Plestiodon septentrionalis Prairie Skink Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Plestiodon septentrionalis Prairie Skink Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Regina grahamii Graham's Crawfish Snake Same watershed, within 20 miles Thompson
6 Scincella lateralis Little Brown Skink Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Scincella lateralis Little Brown Skink Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Trachemys scripta Red-eared Slider Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Trachemys scripta Red-eared Slider Same Level IV ecoregion, within 20 miles Loess Flats and Till Plains
6 Tropidoclonion lineatum Lined Snake 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 Hyla chrysoscelis Cope's Gray Treefrog Same Level IV ecoregion, within 30 miles Loess Flats and Till Plains
8 Terrapene carolina Three-toed Box Turtle Same Level IV ecoregion, within 30 miles Loess Flats and Till Plains
8 Terrapene carolina Three-toed Box Turtle Same Level IV ecoregion, within 30 miles Loess Flats and Till Plains
8 Terrapene ornata Ornate Box Turtle Same Level IV ecoregion, within 30 miles Loess Flats and Till Plains
8 Terrapene ornata Ornate Box Turtle Same Level IV ecoregion, within 30 miles Loess Flats and Till Plains
10 Anaxyrus fowleri Fowler's Toad Same Level IV ecoregion, adjacent county Loess Flats and Till Plains
10 Anaxyrus fowleri Fowler's Toad Same Level IV ecoregion, adjacent county Loess Flats and Till Plains
10 Apalone spinifera Eastern Spiny Softshell Adjacent county, same watershed Lower Grand

Checklist

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