| antarctica | | polymastia invaginata | species | 12 | 0 |
| australia | | polymastia pachymastia | species | 1 | 0 |
| canada | newfoundland and labrador | polymastia andrica | species | 3 | 0 |
| canada | newfoundland and labrador | polymastia corticata | species | 8 | 0 |
| canada | newfoundland and labrador | polymastia grimaldii | species | 1 | 0 |
| canada | newfoundland and labrador | polymastia sp. 1 ap-2014 | species | 1 | 0 |
| canada | nova scotia | polymastia bartletti | species | 4 | 0 |
| greenland | | polymastia thielei | species | 2 | 0 |
| norway | finnmark county | polymastia arctica | species | 5 | 0 |
| norway | finnmark county | polymastia grimaldii | species | 8 | 0 |
| norway | hordaland county | polymastia andrica | species | 3 | 0 |
| norway | hordaland county | polymastia boletiformis | species | 9 | 0 |
| norway | hordaland county | polymastia mamillaris | species | 3 | 0 |
| norway | hordaland county | polymastia sp. 2 ap-2013 | species | 3 | 0 |
| norway | troms county | polymastia andrica | species | 4 | 0 |
| norway | vest-agder county | polymastia boletiformis | species | 6 | 0 |
| norway | vest-agder county | polymastia euplectella | species | 549 | 0 |
| norway | vest-agder county | polymastia mamillaris | species | 3 | 0 |
| panama | bocas del toro province | polymastia tenax | species | 1 | 0 |
| portugal | | polymastia penicillus | species | 2 | 0 |
| russia | karelia republic | polymastia arctica | species | 3 | 0 |
| russia | murmansk oblast | polymastia arctica | species | 13 | 0 |
| united kingdom | northern ireland | polymastia penicillus | species | 4 | 0 |