- 4,662 specimens collected from at least 4 countries
- 89 specimens identified from at least 2 countries
- 490 specimens used in 6 works
Progress
Collected From
- United States 4,259
- France 148
- Italy 26
- Canada 8
Identified From
- United States 4
- Canada 1
Dates Collected
- 1955 – 1960 1
- 1960 – 1965 1,506
- 1965 – 1970 2,127
- 1970 – 1975 389
- 1975 – 1980 309
- 1980 – 1985 10
- 1985 – 1990 64
- 1990 – 1995 3
Dates Identified
- 1905 – 1910 3
- 1955 – 1960 1
- 1960 – 1965 2
- 1975 – 1980 1
- 1990 – 1995 42
- 1995 – 2000 1
- 2000 – 2005 17
- 2005 – 2010 2
- 2010 – 2015 15