Maps
Locality Map
Locality map for Macrochelys temminckii (Alligator Snapping Turtle).
Map created 6 March 2024.
County Map
County map for Macrochelys temminckii (Alligator Snapping Turtle).
Map created 6 March 2024.
Historical Locality Map
Historical locality map for Macrochelys temminckii (Alligator Snapping Turtle). Black circles ( 
) represent records after 1986, blue squares ( 
) represent records between 1966 and 1986, orange triangles ( 
) represent records prior to 1966. Note that more recent records might conceal underlying older records.
Map created 6 March 2024.
Historical County Map
Historical county map for Macrochelys temminckii (Alligator Snapping Turtle). Black circles ( ) represent records after 1986, blue squares ( ) represent records between 1966 and 1986, orange triangles ( ) represent records prior to 1966. Note that only the most recent county record for each county is shown.
Map created 6 March 2024.
Ecological Drainage Locality Map
Ecological Drainage Units locality map for Macrochelys temminckii (Alligator Snapping Turtle).
Map created 6 March 2024.
Natural Divisions Locality Map
Natural Divisions and Sections locality map for Macrochelys temminckii (Alligator Snapping Turtle).
Map created 6 March 2024.
Major Watersheds Locality Map
Major Watersheds locality map for Macrochelys temminckii (Alligator Snapping Turtle).
Map created 6 March 2024.
Level I Ecoregion Locality Map
Level I Ecoregion locality map for Macrochelys temminckii (Alligator Snapping Turtle).
Map created 6 March 2024.
Level II Ecoregion Locality Map
Level II Ecoregion locality map for Macrochelys temminckii (Alligator Snapping Turtle).
Map created 6 March 2024.
Level III Ecoregion Locality Map
Level III Ecoregion locality map for Macrochelys temminckii (Alligator Snapping Turtle).
Map created 6 March 2024.
Level IV Ecoregion Locality Map
Level IV Ecoregion locality map for Macrochelys temminckii (Alligator Snapping Turtle).
Map created 6 March 2024.
Native Status
Macrochelys temminckii (Alligator Snapping Turtle) is native to Missouri.
Collection Summary
Macrochelys temminckii (Alligator Snapping Turtle) has a total of 32 valid, non-duplicated collections representing 19 counties and 27 localities. There are a total of 24 collectors and 19 collection dates for the species. This results in a total of 19 expeditions for the species, a measure of unique date / collector(s) combinations. The earliest collection year for the species in Missouri is 1891 and its most recent collection year is 2020. The earliest and latest collection dates (independent of earliest and most recent collection years) are April 1 and October 13, respectively. If you have a new record to report, read the New Records section of the FAQ.
Collection Summary by County
| County | Localities | Collections | Collectors | Dates | Expeditions | Earliest Year | Latest Year | |
|---|---|---|---|---|---|---|---|---|
 | Bollinger | 1 | 1 | 2 | 1 | 1 | 2002 | 2002 |
| Butler | 2 | 2 | 2 | 2 | 2 | 1961 | 1961 |
| Cape Girardeau | 1 | 1 | 1 | 1 | 1 | 2016 | 2016 |
| Dunklin | 1 | 1 | 1 | 1 | 1 | 2019 | 2019 |
| Greene | 1 | 1 | 3 | 1 | 1 | 2008 | 2008 |
| Howell | 1 | 1 | 1 | 1 | 1 | 2017 | 2017 |
| Lewis | 1 | 1 | 1 | 1 | 1 | ||
| Madison | 1 | 1 | 1 | 1 | 1 | 2014 | 2014 |
| Mississippi | 1 | 1 | 1 | 1 | 1 | 1978 | 1978 |
| Oregon | 1 | 1 | 2 | 1 | 1 | 2004 | 2004 |
| Ozark | 1 | 1 | 1 | 1 | 1 | 2003 | 2003 |
| Pemiscot | 2 | 3 | 2 | 2 | 2 | 1891 | 1891 |
| Ripley | 2 | 2 | 4 | 2 | 2 | 2004 | 2004 |
| Saint Francois | 1 | 2 | 1 | 1 | 1 | ||
| Scott | 1 | 1 | 3 | 1 | 1 | 2020 | 2020 |
| Shannon | 2 | 3 | 2 | 2 | 2 | 1953 | 2004 |
| Stoddard | 2 | 4 | 2 | 2 | 2 | 1979 | 1979 |
| Taney | 3 | 3 | 3 | 2 | 2 | 2020 | 2020 |
| Wayne | 2 | 2 | 2 | 2 | 2 | 1953 | 1953 |
Potential County Records
| Likelihood | County | Rationale | Ecoregion / Watershed | |
|---|---|---|---|---|
 | 2 | Carter | Same watershed, within 5 miles | Current |
| 2 | Christian | Same watershed, within 5 miles | James |
| 2 | Iron | Same watershed, within 5 miles | Upper St. Francis |
| 2 | New Madrid | Same watershed, within 5 miles | Lower Mississippi-Memphis |
| 2 | Sainte Genevieve | Same watershed, within 5 miles | Big |
| 4 | Clark | Same watershed, within 10 miles | Bear-Wyaconda |
| 4 | Jefferson | Same watershed, within 10 miles | Big |
| 4 | Stone | Same watershed, within 10 miles | James |
| 4 | Texas | Same watershed, within 10 miles | Current |
 | 6 | Dent | Same watershed, within 20 miles | Current |
| 6 | Douglas | Same watershed, within 20 miles | Bull Shoals Lake |
| 6 | Douglas | Same watershed, within 20 miles | North Fork White |
| 6 | Lawrence | Same watershed, within 20 miles | James |
| 6 | Marion | Same watershed, within 20 miles | Bear-Wyaconda |
| 6 | Reynolds | Same watershed, within 20 miles | Current |
| 6 | Reynolds | Same watershed, within 20 miles | Upper St. Francis |
| 6 | Washington | Same watershed, within 20 miles | Big |
| 6 | Webster | Same watershed, within 20 miles | James |
 | 8 | Barry | Same watershed, within 30 miles | James |
| 8 | Franklin | Same watershed, within 30 miles | Big |
| 8 | Perry | Same watershed, within 30 miles | Whitewater |
| 8 | Scotland | Same watershed, within 30 miles | Bear-Wyaconda |
Linnaean Classification
- Kingdom:
- Animalia - Animals
- Phylum:
- Chordata - Chordates
- Subphylum:
- Vertebrata - Vertebrates
- Class:
- Reptilia Laurenti, 1768 - Reptiles
- Order:
- Testudines Linnaeus, 1758 - Turtles
- Family:
- Chelydridae Gray, 1870 - Snapping Turtles
- Genus:
- Macrochelys Gray, 1855 - Alligator Snapping Turtles
- Species:
- Macrochelys temminckii (Harlan, 1835) - Alligator Snapping Turtle
Recent Taxonomic Synonyms
(none)