Baltic amber fossil Garypinus electri Beier provides first evidence of phoresy in the pseudoscorpion family Garypinidae (Arachnida: Chelonethi) - 2003
A spiny harvestman (Arachnida: Opiliones) from the Upper Carboniferous of Missouri, USA - 2004
A survey of Baltic amber Theridiidae (Araneae) inclusions, with descriptions of six new species - 2004