Collection Summary
Macrochelys temminckii (Western Alligator Snapping Turtle) has a total of 36 valid, non-duplicated collections representing 20 counties and 30 localities. There are a total of 28 collectors and 22 collection dates for the species. This results in a total of 22 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 2024. 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 |
| Cole | 1 | 1 | 1 | 1 | 1 | 2024 | 2024 |
| 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 | 4 | 7 | 5 | 4 | 4 | 1979 | 2024 |
| Taney | 3 | 3 | 3 | 2 | 2 | 2020 | 2020 |
| Wayne | 2 | 2 | 2 | 2 | 2 | 1953 | 1953 |