| antarctica | | cephalothrix sp. a rg-2014 | species | 2 | 0 |
| antarctica | | cephalothrix sp. b rg-2014 | species | 2 | 0 |
| antarctica | | cf. cephalothrix sp. dh-2009 | species | 3 | 0 |
| argentina | chubut province | cephalothrix sp. 1 am-2014 | species | 7 | 0 |
| belize | | cephalothrix alba | species | 2 | 0 |
| belize | | cephalothrix fasciculus | species | 1 | 0 |
| belize | | cephalothrix sp. 4 fl-2014 | species | 1 | 0 |
| belize | | cephalothrix sp. 5 fl-2014 | species | 1 | 0 |
| chile | | cephalothrix hermaphroditicus | species | 5 | 0 |
| china | | cephalothrix simula | species | 2 | 0 |
| china | | cephalothrix sp. scs-2010 | species | 1 | 0 |
| china | guangdong | cephalothrix hongkongiensis | species | 1 | 0 |
| china | henan | cephalothrix sp. 16 hc-2011 | species | 1 | 0 |
| china | inner mongolia | cephalothrix hongkongiensis | species | 3 | 0 |
| china | shandong | cephalothrix simula | species | 3 | 0 |
| china | shandong | cephalothrix sp. 16 hc-2011 | species | 1 | 0 |
| china | shandong | cephalothrix sp. 3 hc-2011 | species | 4 | 0 |
| china | shandong | cephalothrix sp. 5 hc-2011 | species | 3 | 0 |
| china | zhejiang | cephalothrix sp. 16 hc-2011 | species | 1 | 0 |
| france | bretagne region | cephalothrix hermaphroditicus | species | 1 | 0 |
| france | bretagne region | cephalothrix sp. 14 hc-2011 | species | 4 | 0 |
| france | bretagne region | cephalothrix sp. 4 hc-2011 | species | 3 | 0 |
| french polynesia | | cephalothrix sp. bmoo-08361 | species | 1 | 0 |
| hong kong | | cephalothrix hongkongiensis | species | 3 | 0 |
| italy | friuli-venezia giulia autonomous region | cephalothrix simula | species | 1 | 0 |
| japan | aichi prefecture | cephalothrix sp. 11 hc-2011 | species | 1 | 0 |
| japan | aichi prefecture | cephalothrix sp. 12 hc-2011 | species | 37 | 0 |
| japan | aichi prefecture | cephalothrix sp. 3 hc-2011 | species | 5 | 0 |
| japan | ehime prefecture | cephalothrix sp. 3 hc-2011 | species | 32 | 0 |
| japan | hokkaido prefecture | cephalothrix filiformis | species | 3 | 0 |
| japan | nagasaki prefecture | cephalothrix fasciculus | species | 2 | 0 |
| japan | nagasaki prefecture | cephalothrix sp. 3 hc-2011 | species | 1 | 0 |
| norway | | cephalothrix cf. linearis nembar1137 | species | 1 | 0 |
| panama | | cephalothrix alba | species | 3 | 0 |
| panama | | cephalothrix sp. 10 hc-2011 | species | 1 | 0 |
| panama | | cephalothrix sp. 15 hc-2011 | species | 3 | 0 |
| panama | | cephalothrix sp. 6 fl-2014 | species | 1 | 0 |
| panama | | cephalothrix sp. 9 hc-2011 | species | 1 | 0 |
| russia | | cephalothrix iwatai | species | 4 | 0 |
| russia | | cephalothrix linearis | species | 3 | 0 |
| russia | | cephalothrix simula | species | 1 | 0 |
| russia | | cephalothrix sp. 3 hc-2011 | species | 1 | 0 |
| russia | primorsky krai | cephalothrix filiformis | species | 9 | 0 |
| russia | sakhalin oblast | cephalothrix simula | species | 1 | 0 |
| south korea | | cephalothrix sp. 16 hc-2011 | species | 1 | 0 |
| south korea | | cephalothrix sp. 3 hc-2011 | species | 1 | 0 |
| south korea | jeju province | cephalothrix simula | species | 4 | 0 |
| spain | | cephalothrix bipunctata | species | 5 | 0 |
| spain | | cephalothrix sp. 8 hc-2011 | species | 1 | 0 |
| spain | asturias | cephalothrix cf. simula am-2013 | species | 2 | 0 |
| spain | asturias | cephalothrix sp. 2 am-2014 | species | 412 | 0 |
| spain | cantabria | cephalothrix cf. simula am-2013 | species | 3 | 0 |
| spain | cantabria | cephalothrix simula | species | 2 | 0 |
| spain | galicia | cephalothrix cf. simula am-2013 | species | 2 | 0 |
| spain | galicia | cephalothrix sp. 1 am-2014 | species | 33 | 0 |
| sweden | | cephalothrix arenaria | species | 1 | 0 |
| sweden | | cephalothrix rufifrons | species | 46 | 0 |
| united kingdom | | cephalothrix filiformis | species | 2 | 0 |
| united kingdom | | cephalothrix rufifrons | species | 6 | 0 |
| united states | alaska | cephalothrix spiralis | species | 4 | 0 |
| united states | california | cephalothrix sp. 6 hc-2011 | species | 2 | 0 |
| united states | florida | cephalothrix sp. 6 hc-2011 | species | 2 | 0 |
| united states | hawaii | cephalothrix sp. 2 hc-2011 | species | 2 | 0 |
| united states | maine | cephalothrix spiralis | species | 12 | 0 |
| united states | oregon | cephalothrix cf. spiralis tch-2016 | species | 2 | 0 |
| united states | oregon | cephalothrix major | species | 5 | 0 |
| united states | oregon | cephalothrix sp. 1 tch-2015 | species | 15 | 0 |
| united states | oregon | cephalothrix sp. 2 tch-2015 | species | 5 | 0 |
| united states | oregon | cephalothrix sp. 3 tch-2015 | species | 1 | 0 |
| united states | oregon | cephalothrix sp. 4 tch-2015 | species | 7 | 0 |
| united states | oregon | cephalothrix spiralis | species | 18 | 0 |
| united states | washington | cephalothrix spiralis | species | 1 | 0 |
| vietnam | | cephalothrix cf. alba mcz iz 45638 | species | 4 | 0 |
| vietnam | | cephalothrix cf. alba nembar0973 | species | 1 | 0 |
| vietnam | | cephalothrix cf. alba nembar0974 | species | 1 | 0 |
| vietnam | | cephalothrix sp. 13 hc-2011 | species | 1 | 0 |
| vietnam | | cephalothrix sp. nembar0971 | species | 1 | 0 |