- Algeria
- Bazri et al., 2013; Zeriri et al., 2013
- Bulgaria
- Zicsi and Csuzdi, 1986b
- Canada
- Ontario: Reynolds, 1977
- Denmark
- Blakemore, 2007
- Finland
- Blakemore, 2007
- France
- Bouche, 1972
- French Guiana
- Cernosvitov, 1934; Cernosvitov, 1935
- Greece
- Szederjesi and Csuzdi, 2012
- Greenland
- Stop-Bowitz, 1969; Blakemore, 2007b
- Guatemala
- Brown and Fragoso, 2007
- Iceland
- Stop-Bowitz, 1969; Blakemore, 2007b
- India
- Sinha et al., 2013
- Iran
- Ezzatpanah, 2010; Mirmonsef et al., 2011; Farhadi et al., 2013
- Jordan
- Szederjesi et al., 2013
- Madeira
- Talavera, 1996
- New Zealand
- Lee, 1959; Martin, 1977
- Nicaragua
- Sherlock et al., 2011
- Norway
- Stop-Bowitz, 1969; Blakemore, 2007.
- Romania
- V.V.Pop, 2012.
- Sweden
- Blakemore, 2007
- Taiwan
- Blakemore et al., 2006
- Turkey
- Misirlioglu, 2008
- Ukraine
- Bolotetskii and Kodolova, 2005.
- United Kingdom
- Sims and Gerard, 1985; Sims and Gerard, 1999; Scotland: Carpenter, 2011
- Uruguay
- Grosso and Brown, 2007
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Data are not exhaustive. The database is permanently a work in progress.